NationMaster - Encyclopedia: 12 (number)

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Encyclopedia > 12 (number)

12	10	2

← 10 11 12 13 14 15 16 17 18 19 → This article is about the number 10. ... This article does not cite any references or sources. ... This article is about the number. ... This article is about the number 10. ... 11 (eleven= 12 u mentally chalenged retards ) is the natural number following 10 and preceding 12. ... 13 (thirteen) is the natural number following 12 and preceding 14. ... 14 (fourteen) is the natural number following 13 and preceding 15. ... 15 (fifteen) is the natural number following 14 and preceding 16. ... 16 (sixteen) is the natural number following 15 and preceding 17. ... 17 (seventeen) is the natural number following 16 and preceding 18. ... 18 (eighteen) is the natural number following 17 and preceding 19. ... 19 (nineteen) is the natural number following 18 and preceding 20. ... 20 (twenty) is the natural number following 19 and preceding 21. ... List of numbers — Integers This is a list of articles about numbers (not about numerals). ... The integers are commonly denoted by the above symbol. ... 0 10 20 30 40 50 60 70 80 90 → For other senses of this word, see zero or 0. ... This article is about the number 10. ... 20 (twenty) is the natural number following 19 and preceding 21. ... 30 (thirty) is the natural number following 29 and preceding 31. ... 40 (forty) is the natural number following 39 and preceding 41. ... 50 (fifty) is the number following 49 and preceding 51. ... 60 (sixty) is the natural number following 59 and preceding 61. ... Look up seventy in Wiktionary, the free dictionary. ... 80 (eighty) is the natural number following 79 and preceding 81. ... 90 (ninety) is the natural number preceded by 89 and followed by 91. ... 100 (one hundred) (the Roman numeral is C for centum) is the natural number following 99 and preceding 101. ...
Cardinal	12 twelve
Ordinal	12th twelfth
Numeral system	duodecimal
Factorization	$2^2 cdot 3$
Divisors	1, 2, 3, 4, 6, 12
Roman numeral	XII
Roman numeral (Unicode)	Ⅻ, ⅻ
Binary	1100
Octal	14
Duodecimal	10
Hexadecimal	C
Mathematical properties
φ(12) = 4	τ(12) = 6
σ(12) = 28	π(12) = 5
μ(12) = 0	M(12) = -2

Look up twelve in
Wiktionary, the free dictionary.

12 (twelve) is the natural number following 11 and preceding 13. Aleph-0, the smallest infinite cardinal In mathematics, cardinal numbers, or cardinals for short, are a generalized kind of number used to denote the size of a set, known as its cardinality. ... In set theory, ordinal, ordinal number, and transfinite ordinal number refer to a type of number introduced by Georg Cantor in 1897, to accommodate infinite sequences and to classify sets with certain kinds of order structures on them. ... A numeral is a symbol or group of symbols, or a word in a natural language that represents a number. ... The duodecimal (also known as base-12 or dozenal) system is a numeral system using twelve as its base. ... ... In mathematics, a divisor of an integer n, also called a factor of n, is an integer which evenly divides n without leaving a remainder. ... The system of Roman numerals is a numeral system originating in ancient Rome, and was adapted from Etruscan numerals. ... The binary numeral system, or base-2 number system, is a numeral system that represents numeric values using two symbols, usually 0 and 1. ... The octal numeral system, or oct for short, is the base-8 number system, and uses the digits 0 to 7. ... The duodecimal (also known as base-12 or dozenal) system is a numeral system using twelve as its base. ... In mathematics and computer science, hexadecimal, base-16, or simply hex, is a numeral system with a radix, or base, of 16, usually written using the symbols 0â€“9 and Aâ€“F, or aâ€“f. ... In number theory, the totient φ(n) of a positive integer n is defined to be the number of positive integers less than or equal to n and coprime to n. ... The Ramanujan tau function is the function defined by the following identity: The first few values of the tau function are given in the following table (sequence A000594 in OEIS): If one substitutes with then the function defined by is a holomorphic cusp form of weight 12 and level 1... Divisor function Ïƒ0(n) up to n=250 Sigma function Ïƒ1(n) up to n=250 Sum of the squares of divisors, Ïƒ2(n), up to n=250 Sum of cubes of divisors, Ïƒ3(n) up to n=250 In mathematics, and specifically in number theory, a divisor function is... In mathematics, the prime counting function is the function counting the number of primes less than or equal to some real number x. ... The classical MÃ¶bius function is an important multiplicative function in number theory and combinatorics. ... In number theory, the Mertens function is where μ(k) is the Möbius function. ... Wikipedia does not have an article with this exact name. ... Wiktionary (a portmanteau of wiki and dictionary) is a multilingual, Web-based project to create a free content dictionary, available in over 150 languages. ... In mathematics, a natural number can mean either an element of the set {1, 2, 3, ...} (i. ... 11 (eleven= 12 u mentally chalenged retards ) is the natural number following 10 and preceding 12. ... 13 (thirteen) is the natural number following 12 and preceding 14. ...

The word "twelve" is a native English word that presumably arises from the Germanic compound twa-lif "two-leave", meaning that two is left after one takes away the base, ten. This compound meaning may have been transparent to speakers of Old English, but the modern form "twelve" is quite opaque. Only the remaining tw- hints that twelve and two are related. Etymology (Weekley, Skeat) suggests that "twelve" (similar to "eleven") consists of two parts, the first meaning "two" and the second "leftover", so a literal translation would yield "two remaining [after having ten taken]". The English language is a West Germanic language that originates in England. ... In linguistics, a compound is a lexeme (a word) that consists of more than one other lexeme. ... Linguistic transparency is a phrase which is used in multiple, overlapping subjects in the fields of linguistics and the philosophy of language. ... Old English (also called Anglo-Penis[1], Englisc by its speakers) is an early form of the English language that was spoken in parts of what is now England and southern Scotland between the mid-fifth century and the mid-twelfth century. ...

A group of twelve things is called a Duodecad. The ordinal adjective is duodenary.

The number twelve is often used as a sales unit in trade, and is often referred to as a dozen. Twelve dozen are known as a gross. (Note that there are thirteen items in a baker's dozen.) Dozen is another word for the number twelve. ... Categories: | | ... For other uses, see Bakers dozen (disambiguation). ...

As shown below, the number twelve is frequently referenced in the Abrahamic religions and is also central to Western calendar and units of time. map showing the prevalence of Abrahamic (purple) and Dharmic (yellow) religions in each country. ... For the calendar of religious holidays and periods, see liturgical year. ... Look up time in Wiktionary, the free dictionary. ...

In mathematics

Twelve is a composite number, the smallest number with exactly six divisors, its proper divisors being 1, 2, 3, 4 and 6. Twelve is also a highly composite number, the next one being 24.

It is the first composite number of the form p²q; a square prime, and also the first member of the (p²) family in this form.

12 has an aliquot sum of 16 (133% in abundance). Accordingly, 12 is the first abundant number and demonstrates an 8 member aliquot sequence; {12,16,15,9,4,3,1,0} 12 is the 3rd composite number in the 3-aliquot tree. The only number which has 12 as its aliquot sum is the square 121. Only 2 other square primes are abundant (18 and 20).

The duodecimal system (12₁₀ [twelve] = 10₁₂), which is the use of 12 as a division factor for many ancient and medieval weights and measures, including hours, probably originates from Mesopotamia.

Twelve is a superfactorial, being the product of the first three factorials.

Twelve being the product of three and four, the first four positive integers show up in the equation 12 = 3 × 4, which can be continued with the equation 56 = 7 × 8.

A twelve-sided polygon is a dodecagon. A twelve-faced polyhedron is a dodecahedron.

Twelve is a pentagonal number.

The densest three-dimensional lattice sphere packing has each sphere touching 12 others, and this is almost certainly true for any arrangement of spheres (the Kepler conjecture). Twelve is also the kissing number in three dimensions.

In base thirteen and higher bases (such as hexadecimal), twelve is represented as C.

Twelve is superabundant, sparsely totient, a Harshad number and a Pell number.

Twelve is the ninth Perrin number, preceded in the sequence by 5, 7, 10.

Twelve is the smallest weight for which a cusp form exists. This cusp form is the discriminant Δ(q) whose Fourier coefficients are given by the Ramanujan τ-function and which is (up to a constant multiplier) the 24th power of the Dedekind eta function. This fact is related to a constellation of interesting appearances of the number twelve in mathematics ranging from the value of the Riemann zeta function function at -1 i.e. ζ(-1)=-1/12, the fact that the abelianization of SL(2,Z) has twelve elements, and even the properties of lattice polygons.

Twelve is a sublime number, a number that has a perfect number of divisors, and the sum of its divisors is also a perfect number. Since there is a subset of 12's proper divisors that add up to 12 (all of them but with 4 excluded), 12 is a semiperfect number.

If an odd perfect number is of the form 12k+1, it has at least twelve distinct prime factors.

A composite number is a positive integer which has a positive divisor other than one or itself. ... In mathematics, a divisor of an integer n, also called a factor of n, is an integer which evenly divides n without leaving a remainder. ... This article is about the number one. ... This article does not cite any references or sources. ... Look up three in Wiktionary, the free dictionary. ... This article discusses the number Four. ... Look up six in Wiktionary, the free dictionary. ... A highly composite number is a positive integer which has more divisors than any positive integer below it. ... 24 (twenty-four) is the natural number following 23 and preceding 25. ... A composite number is a positive integer which has a positive divisor other than one or itself. ... Events A Roman army of 90,000 men commanded by Germanicus gains a victory at Idistaviso, defeating the German war chief Arminius and capturing his wife Thusnelda, and recovering the lost eagles of Varus legions. ... This article is about the year 12. ... Events A Roman army of 90,000 men commanded by Germanicus gains a victory at Idistaviso, defeating the German war chief Arminius and capturing his wife Thusnelda, and recovering the lost eagles of Varus legions. ... For other uses, see 15 (disambiguation). ... For other uses, see 9 (disambiguation). ... For other uses, see 4 (disambiguation). ... Events By place Roman Empire The rule of Augustus is renewed for a ten-year period. ... This article is about the year 1. ... (Redirected from 0) Zero redirects here. ... A composite number is a positive integer which has a positive divisor other than one or itself. ... The term perfect square is used in mathematics in two meanings: an integer which is the square of some other integer, i. ... 121 is a traditional clan of RA3 in Sao Paulo, Brazil. ... Ë‘ This article is about the year 18. ... Events Roman Empire Tiberias is built on the Sea of Galilee by Herod Antipas, in honour of Tiberius. ... The duodecimal (also known as base-12 or dozenal) system is a numeral system using twelve as its base. ... This article needs to be cleaned up to conform to a higher standard of quality. ... This article needs to be cleaned up to conform to a higher standard of quality. ... The hour (symbol: h) is a unit of time. ... Mesopotamia was a cradle of civilization geographically located between the Tigris and Euphrates rivers, largely corresponding to modern-day Iraq. ... In mathematics, the factorial of a natural number n is the product of the positive integers less than or equal to n. ... Look up polygon in Wiktionary, the free dictionary. ... A regular dodecagon. ... In geometry, a face of a polyhedron is any of the polygons that make up its boundaries. ... For the game magazine, see Polyhedron (magazine). ... A dodecahedron is any polyhedron with twelve faces, but usually a regular dodecahedron is meant: a Platonic solid composed of twelve regular pentagonal faces, with three meeting at each vertex. ... A visual representation of the first six pentagonal numbers A pentagonal number is a figurate number that extends the concept of triangular and square numbers to the pentagon, but, unlike the first two, the patterns involved in the construction of pentagonal numbers are not rotationally symmetrical. ... In mathematics, especially in geometry and group theory, a lattice in Rn is a discrete subgroup of Rn which spans the real vector space Rn. ... Sphere packing finds practical application in the stacking of oranges. ... In mathematics, the Kepler conjecture is a conjecture about sphere packing in three dimensional Euclidean space. ... In geometry, the kissing number problem is to find the maximum number of spheres of radius 1 that can simultaneously touch the unit sphere in n-dimensional Euclidean space (or, with the restriction for their centres to be in a particular lattice). ... In mathematics and computer science, hexadecimal, base-16, or simply hex, is a numeral system with a radix, or base, of 16, usually written using the symbols 0â€“9 and Aâ€“F, or aâ€“f. ... In mathematics, a superabundant number (sometimes abbreviated as SA) is a certain kind of natural number. ... In mathematics, a sparsely totient number is a certain kind of natural number. ... A Harshad number, or Niven number, is an integer that is divisible by the sum of its digits in a given number base. ... In mathematics, the Pell numbers and companion Pell numbers (Pell-Lucas numbers) are both sequences of integers. ... In mathematics, the Perrin numbers are defined by the recurrence relation P(0) = 3, P(1) = 0, P(2) = 2, and P(n) = P(n âˆ’ 2) + P(n âˆ’ 3) for n > 2. ... In number theory, a cusp form is a particular kind of modular form, distinguished in the case of modular forms for the modular group by the vanishing in the Fourier series expansion of the constant coefficient a0. ... Ramanujan Srinivasa Aiyangar Ramanujan (Tamil: ஸ்ரீனிவாஸ ஐயங்கார் ராமானுஜன்) (December 22, 1887 – April 26, 1920) was a groundbreaking Indian mathematician. ... The Dedekind eta function is a function defined on the upper half plane of complex numbers whose imaginary part is positive. ... In mathematics, the Riemann zeta function, named after German mathematician Bernhard Riemann, is a function of significant importance in number theory, because of its relation to the distribution of prime numbers. ... In mathematics, the modular group Γ (Gamma) is a group that is a fundamental object of study in number theory, geometry, algebra, and many other areas of advanced mathematics. ... In mathematics, a sublime number is a positive integer which has a perfect number of positive divisors (including itself), and whose positive divisors add up to another perfect number. ... In mathematics, a perfect number is defined as an integer which is the sum of its proper positive divisors, that is, the sum of the positive divisors not including the number. ... In mathematics, a semiperfect number or pseudoperfect number is a natural number n that is equal to the sum of all or some of its proper divisors. ... In mathematics, a perfect number is defined as an integer which is the sum of its proper positive divisors, that is, the sum of the positive divisors not including the number. ...

List of Basic Calculations

Multiplication	a	2	3	4	5	6	d	8	9	10		11	12	13	14	15	16	17	18	19	20		21	22	25		50	100	1000
$12 times x$	12	24	36	48	60	72	84	96	108	120		132	144	156	168	180	192	204	216	228	240		252	264	300		600	1200	12000

In mathematics, multiplication is an elementary arithmetic operation. ... 24 (twenty-four) is the natural number following 23 and preceding 25. ... 36 (thirty-six) is the natural number following 35 and preceding 37. ... 48 (forty-eight) is the natural number following 47 and preceding 49. ... 60 (sixty) is the natural number following 59 and preceding 61. ... 72 is the natural number following 71 and preceding 73. ... 84 (eighty-four) is the natural number following 83 and preceding 85. ... 96 is the natural number following 95 and preceding 97. ... 108 is the natural number following 107 and preceding 109. ... 120 (one hundred twenty in American English; one hundred and twenty in British English) is the natural number following 119 and preceding 121. ... 132 is the natural number following 131 and preceding 133. ... 144 is the whole number following 143 and preceding 145. ... 156 is the number equal to 100 + 50 + 6. ... 168 is the natural number following 167 and preceding 169. ... 180 (one hundred eighty in American English, one hundred and eighty in British English) is the natural number following 179 and preceding 181. ... 190 is the natural number following one hundred eighty-nine and preceding one hundred ninety-one. ... 200 (two hundred) is the natural number following 199 and preceding 201. ... Number of Nicolae Carpathias choice in the best-selling Left Behind series by Tim LaHaye and Jerry B Jenkins. ... 228 is the natural number between 227 and 229. ... This page is a candidate for speedy deletion, because: it is patent nonsense. ... 250 is the natural number following 249 and preceding 251. ... 260 (two hundred [and] sixty) is the magic constant of the nÃ—n magic square and n-Queens Problem for n = 8, the size of an actual chess board. ... This article is about the number 300, as well as the integers which follow it, up to 399. ... Six hundred is the natural number following five and hundred ninety-nine and preceding six hundred and one. ...

Geometry

12-sided dodecahedron

12-sided rhombic dodecahedron

Icosahedron with 12 vertices

It is possible to construct a perfect circle divided into twelve sectors of 30 degrees each, using only a compass and straightedge. Image File history File links This is a lossless scalable vector image. ... Image File history File links This is a lossless scalable vector image. ... Download high resolution version (849x754, 59 KB)Rhombic dodecahedron, made by me using POV-Ray, see image:poly. ... Download high resolution version (849x754, 59 KB)Rhombic dodecahedron, made by me using POV-Ray, see image:poly. ... Download high resolution version (819x791, 71 KB)Icosahedron, made by me using POV-Ray, see image:poly. ... Download high resolution version (819x791, 71 KB)Icosahedron, made by me using POV-Ray, see image:poly. ...

Using a compass, construct a simple circle.
Taking care not to change the radius setting, draw a second circle with center anywhere on the perimeter of the first.
Now go to the two points where the second circle crosses the first, and draw two more circles from these centers.
Continue this process to draw the final three circles, working your way around the perimeter of the first.
Finally connect the center of the original circle with all other points of intersection, using a straightedge.

You now have twelve radial lines emanating from the center, separated by twelve 30-degree sectors, all constructed from seven equal-sized circles.

In numeral systems

١٢

ԺԲ

ιβ´

ΔΙΙ

יב

१२

十二

[[Chinese numerals|Chinese] and [[Japanese numerals|Japanese]

௧௨

Tamil

Ⅻ

Roman and Etruscan

๑๒

Thai

IIX

Chuvash

For other uses, see Arabic numerals (disambiguation). ... Distribution of Greek dialects, ca. ... Attic numerals were used by ancient Greeks, possibly from the 7th century BC. They were also known as Herodianic numerals because they were first described in a 2nd century manuscript by Herodian. ... The system of Hebrew numerals is a quasi-decimal alphabetic numeral system using the letters of the Hebrew alphabet. ... () is an abugida script used to write, either along with other scripts, or exclusively, several Indian languages, including Sanskrit, Hindi, Marathi, Sindhi, Bihari, Bhili, Marwari, Konkani, Bhojpuri, languages from Nepal like Nepali, Tharu Nepal Bhasa and sometimes Kashmiri and Romani. ... Note: This page or section contains IPA phonetic symbols in Unicode. ... Roman numerals are a numeral system originating in ancient Rome, adapted from Etruscan numerals. ... The Etruscan numerals were used by the ancient Etruscans. ... Chuvash (Chuvash: Ð§ÄƒÐ²Ð°ÑˆÐ»Ð°, ÄŒÄƒvaÅ¡la, IPA: ; also known as CÄƒvash, Chuwash, Chovash, Chavash or Ã‡uaÅŸ) is a Turkic language spoken to the west of the Ural Mountains in central Russia. ...

In science

The atomic number of magnesium
There are twelve cranial nerves
The duodenum (from Latin duodecim, "twelve") is the first part of the small intestine, that is about twelve inches long. More precisely, this section of the intestine was measured not in inches but in fingerwidths. In fact, in German the name of the duodenum is Zwölffingerdarm, meaning "twelve-finger bowel."
Force 12 on the Beaufort wind force scale corresponds to the maximum wind speed of a hurricane.

See also: List of elements by atomic number In chemistry and physics, the atomic number (also known as the proton number) is the number of protons found in the nucleus of an atom. ... General Name, symbol, number magnesium, Mg, 12 Chemical series alkaline earth metals Group, period, block 2, 3, s Appearance silvery white solid at room temp Standard atomic weight 24. ... Cranial nerves Cranial nerves are nerves that emerge directly from the brain in contrast to spinal nerves which emerge from segments of the spinal cord. ... In anatomy of the digestive system, the duodenum is a hollow jointed tube connecting the stomach to the jejunum. ... In biology the small intestine is the part of the gastrointestinal tract (gut) between the stomach and the large intestine and includes the duodenum, jejunum, and ileum. ... This article does not cite any references or sources. ... The Beaufort scale is an empirical measure for describing wind intensity based mainly on observed sea conditions. ...

Astronomy

Messier object M12, a magnitude 8.0 globular cluster in the constellation Ophiuchus
The New General Catalogue object NGC 12, a magnitude 13.1 spiral galaxy in the constellation Pisces
The Saros number of the solar eclipse series which began on 2680 BC August 8 and ended on 1129 BC February 25. The duration of Saros series 12 was 1550.5 years, and it contained 87 solar eclipses.
The Saros number of the lunar eclipse series which began on 2360 BC May 28 and ended on 1062 BC July 17. The duration of Saros series 12 was 1298.1 years, and it contained 73 lunar eclipses.
The 12th moon of Jupiter is Lysithea.

The Messier objects are a set of astronomical objects catalogued by Charles Messier in his catalogue of Nebulae and Star Clusters first published in 1774. ... Globular Cluster M12 (also known as Messier Object 12, Messier 12, M12, or NGC 6218) is a globular cluster in the Ophiuchus constellation. ... The apparent magnitude (m) of a star, planet or other heavenly body is a measure of its apparent brightness; that is, the amount of light received from the object. ... The Globular Cluster M80 in the constellation Scorpius is located about 28,000 light years from the Sun and contains hundreds of thousands of stars. ... Ophiuchus (IPA: ), formerly referred to as Serpentarius (IPA: ), the former originating in the Greek language and the latter in the Latin language, both meaning serpent-holder, is one of the 88 constellations and was also one of the 48 listed by Ptolemy. ... The New General Catalogue (NGC) is the most well-known catalogue of deep sky objects in amateur astronomy. ... It has been suggested that spiral nebula be merged into this article or section. ... This article is about the star grouping. ... For other uses, see Pisces. ... A Saros cycle is a period of 6585 + 1/3 days (approximately 18 years 10 days and 8 hours) which can be used to predict eclipses of the sun and the moon. ... Photo taken during the 1999 eclipse. ... (28th century BC - 27th century BC - 26th century BC - other centuries) (4th millennium BC - 3rd millennium BC - 2nd millennium BC) Events 2900 - 2334 BC -- Mesopotamian wars of the Early Dynastic period 2775 - 2650 BC -- Second Dynasty wars in Egypt Germination of the Bristlecone pine tree Methuselah about 2700 BC, the... is the 220th day of the year (221st in leap years) in the Gregorian calendar. ... (Redirected from 1129 BC) Centuries: 13th century BC - 12th century BC - 11th century BC Decades: 1170s BC 1160s BC 1150s BC 1140s BC 1130s BC - 1120s BC - 1110s BC 1100s BC 1090s BC 1080s BC 1070s BC Events and Trends 1126 BC - Thymoetes, legendary King of Athens dies childless after... is the 56th day of the year in the Gregorian calendar. ... Time lapse movie of the 3 March 2007 lunar eclipse A lunar eclipse occurs whenever the Moon passes through some portion of the Earths shadow. ... May 28 is the 148th day of the year (149th in leap years) in the Gregorian calendar. ... Centuries: 12th century BC - 11th century BC - 10th century BC Decades: 1110s BC 1100s BC 1090s BC 1080s BC 1070s BC - 1060s BC - 1050s BC 1040s BC 1030s BC 1020s BC 1010s BC Events and trends 1069 BC - Ramses XI dies, ending the Twentieth Dynasty. ... is the 198th day of the year (199th in leap years) in the Gregorian calendar. ... Atmospheric characteristics Atmospheric pressure 70 kPa Hydrogen ~86% Helium ~14% Methane 0. ... Lysithea (lye-sith-ee-É™ or lÉ™-sith-ee-É™, IPA: ; Greek Î›Ï…ÏƒÎ¹Î¸ÎÎ±) is a prograde irregular satellite of Jupiter. ...

In religion

Religion inherits the number twelve for its magical properties. Not to be confused with Magic (illusion). ...

The biblical Jacob had 12 sons, who were the progenitors of the Twelve Tribes of Israel.
In Judaism, 12 signifies the age a girl matures (bat mitzvah).
The New Testament describes twelve apostles of Jesus; when Judas Iscariot was disgraced, a meeting was held (Acts) to add Matthias to complete the number twelve once more.
In The Church of Jesus Christ of Latter-day Saints, there is a Quorum of the Twelve Apostles.
The Book of Revelation 12:1 mentions a woman — usually interpreted as Virgin Mary — wearing a crown of twelve stars, and there are 12,000 people sealed from each of the twelve tribes of Judah (144000).
In Shi'a Islam, there are twelve Imams. These twelve early leaders of Islam are—Ali, Hasan, Husayn, and nine of Husayn's descendants.
There are 12 days of Christmas. The song Twelve Days of Christmas came from the traditional practice of extending Yuletide celebrations over the twelve days from Christmas day to the eve of Epiphany; the period of thirteen days including Epiphany is sometimes known as Christmastide. Thus Twelfth Night is another name for the twelfth day of Christmas or January 5 (the eve of Epiphany).
Eastern Orthodoxy observes 12 Great Feasts.
In Antiquity there are numerous magical/religious uses of twelves.^[1] Ancient Greek religion, the Twelve Olympians were the principal gods of the pantheon.
The chief Norse god, Odin, had 12 sons.
Several sets of twelve cities are identified in history as a dodecapolis, the most familiar being the Etruscan League.
In the King Arthur Legend, Arthur is said to have subdued 12 rebel princes and to have won 12 great battles against Saxon invaders. [source: Benet's Reader's Encyclopedia, 3d ed]

This article is about Jacob in the Hebrew Bible. ... â€œThe Twelve Tribesâ€ redirects here. ... This article or section does not cite its references or sources. ... When a Jewish child reaches the age of maturity (12 years and one day for girls, 13 years and one day for boys) that child becomes responsible for him/herself under Jewish law; at this point a boy is said to become Bar Mitzvah (בר מצו&#1493... This article is about the Christian scriptures. ... Topics in Christianity Movements Â· Denominations Â· Other religions Ecumenism Â· Preaching Â· Prayer Music Â· Liturgy Â· Calendar Symbols Â· Art Â· Criticism Important figures Apostle Paul Â· Church Fathers Constantine Â· Athanasius Â· Augustine Anselm Â· Aquinas Â· Palamas Â· Luther Calvin Â· Wesley Arius Â· Marcion of Sinope Archbishop of Canterbury Â· Catholic Pope Coptic Pope Â· Ecumenical Patriarch Christianity Portal This box: For other... This article is about Jesus of Nazareth. ... Topics in Christianity Movements Â· Denominations Â· Other religions Ecumenism Â· Preaching Â· Prayer Music Â· Liturgy Â· Calendar Symbols Â· Art Â· Criticism Important figures Apostle Paul Â· Church Fathers Constantine Â· Athanasius Â· Augustine Anselm Â· Aquinas Â· Palamas Â· Luther Calvin Â· Wesley Arius Â· Marcion of Sinope Archbishop of Canterbury Â· Catholic Pope Coptic Pope Â· Ecumenical Patriarch Christianity Portal This box: For other... For the literature genre, see Acts of the Apostles (genre). ... Matthias can refer to: Saint Matthias Matthias, Holy Roman Emperor Matthias Corvinus This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... For other uses, see Church of Jesus Christ of Latter Day Saints (disambiguation). ... The current Quorum of the Twelve Apostles in the LDS Church. ... Visions of John of Patmos, as depicted in the TrÃ¨s Riches Heures du Duc de Berry. ... â€œOur Ladyâ€ redirects here. ... 144,000 is a positive whole integer. ... ShÄ«â€˜a Islam, also Shiâ€˜ite Islam, or Shiâ€˜ism (Arabic ) is the second largest denomination of the Islamic faith. ... The Shia Imam is considered by the Shia sect of Islam to be the rightful successor to Muhammad, and is similar to the Caliph in Sunni Islam. ... Ali ibn Abi Talib (علي بن أبي طالب) (c. ... Hasan ibn Ali ibn Abu Talib (c. ... Husayn ibn Ali ibn Abu Talib (c. ... The Twelve Days of Christmas and the associated evenings of those twelve days (Twelve-tide), are the festive days beginning the evening of Christmas Day (December 25) through the morning of Epiphany on (January 6). ... For other uses, see Christmas (disambiguation). ... This article is about the Christian feast. ... This article is about the Christian feast. ... Christmastide (also Christmas or the Christmas season) is one of the seasons of the liturgical year of some Christian churches. ... Twelfth Night is a holiday in some branches of Christianity marking the coming of the Epiphany, concluding the Twelve Days of Christmas, and is defined by the Oxford English Dictionary as the evening of the fifth of January, preceding Twelfth Day, the eve of the Epiphany, formerly the last day... is the 5th day of the year in the Gregorian calendar. ... This article is about the Christian feast. ... // Great Feasts of the Orthodox Church Easter/Pascha The feast of the Resurrection of Jesus, called Easter or Pascha, is the greatest of the feasts of the Eastern Orthodox Church. ... Twelve Olympians, also known as the Dodekatheon (Greek: Î”Ï‰Î´ÎµÎºÎ¬Î¸ÎµÎ¿Î½ < Î´Ï‰Î´ÎµÎºÎ±, dodeka, twelve + Î¸ÎµÎ¿Î½, theon, of the gods), in Greek religion, were the principal gods of the Greek pantheon, residing atop Mount Olympus. ... A pantheon (from Greek Î Î¬Î½Î¸ÎµÎ¹Î¿Î½, temple of all gods, from Ï€á¾¶Î½, all + Î¸ÎµÏŒÏ‚, god) is a set of all the gods of a particular religion or mythology, such as the gods of Hinduism, Norse, Egyptian, Shintoism, Greek, vodun, Yoruba Mythology and Roman mythology. ... Norse, Viking or Scandinavian mythology comprises the indigenous pre-Christian religion, beliefs and legends of the Scandinavian peoples, including those who settled on Iceland, where most of the written sources for Norse mythology were assembled. ... For other meanings of Odin, Woden or Wotan see Odin (disambiguation), Woden (disambiguation), Wotan (disambiguation). ...

In time

Most calendar systems have twelve months in a year.
The Western zodiac has twelve signs, as does the Chinese zodiac.
The Chinese use a 12 years cycle for time-reckoning called Earthly Branches.
There are twenty-four hours in a day in all, with twelve hours for a half a day. The hours are numbered from one to twelve for both the ante meridiem (a.m.) half of the day and the post meridiem (p.m.) half of the day. 12:00 after a.m. and before p.m. (in the middle of the day) is noon, and 12:00 after p.m. and before a.m. (in the middle of the night) is midnight. A new day is considered to start with the stroke of midnight. Furthermore, the basic units of time (60 seconds, 60 minutes, 24 hours) can all perfectly divide by twelve.
The minute hand of a clock face turns twelve times as fast as the hour hand.

For other uses, see Calendar (disambiguation) A page from the Hindu calendar 1871â€“1872. ... Look up Month in Wiktionary, the free dictionary. ... A year (from Old English gÄ“r) is the time between two recurrences of an event related to the orbit of the Earth around the Sun. ... The term zodiac denotes an annual cycle of twelve stations along the ecliptic, the apparent path of the sun across the heavens through the constellations that divide the ecliptic into twelve equal zones of celestial longitude. ... Chinese astrology (占星術 pinyin: zhan4 xing1 shu4; 星學 pinyin: xing1 xue2; 七政四餘 pinyin: qi1 zheng4 si4 yu2; and 果老星宗 pinyin: guo3 lao3 xing1 zong1) is related to the Chinese calendar, particularly its 12-year cycle of animals (aka Chinese Zodiac), and... The Earthly Branches (Chinese: ; pinyin: dÃ¬zhÄ«; or Chinese: ; pinyin: shÃÃ¨rzhÄ«; literally twelve branches) provide one Chinese system for reckoning time. ... The hour (symbol: h) is a unit of time. ...

In sports

American baseball player, Graig Nettles, wore number 12 for the Cleveland Indians (1970-72).
In rugby union one of the centres, most often but not always the inside centre, wears the 12 shirt.
One popular jersey number of American football quarterbacks, like Roger Staubach, Ken Stabler, Jim Kelly, Joe Namath, The Legend Mario Reznik, and Tom Brady. It's also the number worn by hockey player Sid Abel.
Jersey Number of Basketball Point guards, like John Stockton, Kirk Hinrich, Rafer Alston
In both soccer and American Football, the number 12 is a symbolic reference to the fans because of the support they give to the 11 players on the field. Texas A&M University reserves the number 12 jersey for a walk on player who represents the original "12th Man", a fan who was asked to play when the team's reserves were low in a college American football game in 1922. Similarly, Bayern Munich, Hammarby and the Seattle Seahawks do not allow field players to wear the number 12 on their jersey because it is reserved for their supporters.
Jersey number of Dwight Howard of the Orlando Magic

For other uses, see Rugby (disambiguation). ... United States simply as football, is a competitive team sport that is both fast-paced and strategic. ... Navy quarterback Aaron Polanco sets up to throw. ... Roger Thomas Staubach (born February 5, 1942 in Cincinnati, Ohio) is a businessman, Heisman Trophy winner and former American professional football player where he was the quarterback for the Dallas Cowboys for most of the 1970s during their reign as Americas Team. ... Kenny The Snake Stabler (born December 25, 1945) is a former National Football League quarterback who played quarterback at the University of Alabama and for the Oakland Raiders (1970-1979); and for the Houston Oilers and New Orleans Saints (1980-1984). ... James Edward Kelly (born February 14, 1960 in Pittsburgh, Pennsylvania) was an American football quarterback for the Buffalo Bills. ... Joseph William Namath (born May 31, 1943), also known as Broadway Joe, was an American football Hall of Fame quarterback in the American Football League and National Football League during the 1960s and 1970s. ... Thomas Edward Brady, Jr. ... Sidney Sid Gerald Abel (February 22, 1918 - February 7, 2000) was a Canadian professional hockey player and later coach in the National Hockey League. ... This article is about the sport. ... This article does not cite any references or sources. ... This article is about the professional basketball player. ... (born January 2, 1981 in Sioux City, Iowa) is an American NBA basketball player, currently starting at point guard for the Chicago Bulls. ... Rafer Jamel Alston, a. ... A player (wearing the red kit) has penetrated the defence (in the white kit) and is taking a shot at goal. ... United States simply as football, is a competitive team sport that is both fast-paced and strategic. ... Fans of Janet Jackson, at Much Music in Toronto The word fan refers to someone who has an intense, occasionally overwhelming liking of a person, group of persons, work of art, idea, or trend. ... Texas A&M University redirects here. ... The 12th man is a term commonly used to describe the fans within a stadium during American football or association football games. ... United States simply as football, is a competitive team sport that is both fast-paced and strategic. ... FC Bayern Munich (German: FC Bayern MÃ¼nchen) is a German football club based in Munich, the capital of the state of Bavaria. ... Hammarby IF is a Swedish football club, which plays its home games at Söderstadion in the Hammarby district of Stockholm. ... City Seattle, Washington Team colors Pacific Blue, Navy Blue, Neon Green, White Head Coach Mike Holmgren Owner Paul Allen General manager Tim Ruskell Mascot Blitz, and Taima the hawk League/Conference affiliations National Football League (1976â€“present) American Football Conference (1977-2001) AFC West (1977-2001) National Football Conference (1976... Dwight David Howard (born December 8, 1985, in Atlanta, Georgia[1]) is an American basketball player for the Orlando Magic of the National Basketball Association (NBA). ... The Orlando Magic is a professional basketball team based in Orlando, Florida. ...

In technology

ASCII and Unicode code point for form feed.
The number of function keys on most PC keyboards (F1 through F12)
The number of dialling keys in any standard digital telephone (1 through 9, 0, * and #)
Microsoft's Rich Text Format specification assigns numbers congruent to 12 mod 256 to variants of the French language.

Image:ASCII fullsvg There are 95 printable ASCII characters, numbered 32 to 126. ... The Unicode Standard, Version 5. ... In computing, form feed is one of control characters in ASCII. It forces the printer to eject the current page and to continue printing at the top of another. ... A function key is a key on a computer or terminal keyboard which can be programmed so as to cause an operating system command interpreter or application program to perform certain actions. ... The Rich Text Format (often abbreviated to RTF) is a proprietary document file format developed by Microsoft in 1987 for cross-platform document interchange. ... French (français, langue française) is one of the most important Romance languages, outnumbered in speakers only by Spanish and Portuguese. ...

In the arts

Film

Movies with the number twelve or its variations in their titles include

12
Cheaper by the Dozen (1950)
Cheaper by the Dozen (2003)
Cheaper by the Dozen 2
The Dirty Dozen
12 Monkeys
Ocean's Twelve
Twelve Chairs
12 Angry Men
Heaven and Earth Magic, an avant-garde film by Harry Everett Smith originally titled Number 12

Cheaper by the Dozen (1950) is an American comedy-drama film. ... Cheaper by the Dozen is a 2003 American comedy film about a family with twelve children (seven boys and five girls). ... Cheaper by the Dozen 2 is a film produced by 20th Century Fox and released in 2005 (see 2005 in film). ... For the rap group, see D12. ... (Redirected from 12 Monkeys) Twelve Monkeys is a 1995 science fiction conspiracy theory movie directed by former Monty Python member Terry Gilliam and inspired by the short film La Jetée. ... Oceans Twelve is a 2004 film that takes place after the events of the 2001 movie Oceans Eleven. ... The Twelve Chairs (Двенадцать Стульев) (1928) is a famous satirical novel by the Soviet authors Ilf and Petrov, q. ... This article includes a list of works cited or a list of external links, but its sources remain unclear because it lacks in-text citations. ... VHS cover Heaven and Earth Magic (also called Number 12, The Magic Feature, or Heaven and Earth Magic Feature) is an American avant garde feature film made by Harry Everett Smith. ... Cover of Think of the Self Speaking: Harry Smith -- Selected Interviews; Singh, Rani, editor Seattle: Elbow/Cityful Press, 1999. ...

Television

The number twelve plays a significant role in the television franchise Battlestar Galactica. The characters come from the Twelve Colonies of Kobol and worship the twelve lords of Kobol. In the re-imagined series, there are also twelve models of the humanoid version of Cylons.
"The Number 12 Looks Just Like You" is an episode of the Television show "The Twilight Zone".
Schoolhouse Rock! portrayed an alien child using base-twelve arithmetic in the short "Little Twelvetoes".

Battlestar Galactica. ... The flag of the Twelve Colonies in the reimagined series The Twelve Colonies of Man or Twelve Colonies of Kobol constitute the main human civilization in the fictional universe of the original 1978 science fiction film and television series Battlestar Galactica, and in the subsequent miniseries (2003) and series reimagining... Kobol is the name of a planet in the fictional Battlestar Galactica universe. ... Old Cylon Centurion shown in a museum display in the 2003 Battlestar Galactica miniseries The Cylons are a cybernetic civilization at war with the Twelve Colonies of humanity in the Battlestar Galactica science fiction franchise, in the original 1978/1980 series and movie, as well as the 2003 reimagining. ... The Twilight Zone title. ... Multiplication Rock was the mathematical arm of Schoolhouse Rock, developed in the early 1970s. ...

Theatre

Twelfth Night is a comedy by William Shakespeare

Twelfth Night, or What You Will is a comedy by William Shakespeare. ... Wikipedia does not yet have an article with this exact name. ...

Literature

The Twelve is a poem by Aleksandr Blok
Twelve (novel) is a novel by Nick McDonell
The Twelve Chairs is a satirical novel by the Soviet authors Ilf and Petrov
Cheaper by the Dozen is a 1946 novel by Frank Bunker Gilbreth, Jr. and Ernestine Gilbreth Carey

The Twelve (Russian: Ð”Ð²ÐµÐ½Ð°Ð´Ñ†Ð°Ñ‚ÑŒ) is a controversial long poem by Aleksandr Blok. ... Blok in 1907 Alexander Blok (Александр Александрович Блок, 1880-1921) was probably the most gifted lyrical poet that Russia produced since Alexander Pushkin. ... Twelve is a novel completed by Nick McDonell when he was 17 years old. ... Nick McDonell (born in Manhattan on February 18, 1984 as Robert Nicholas McDonell is an American writer. ... The Twelve Chairs The Twelve Chairs (Russian: ) (1928) is a famous satirical novel by the Soviet authors Ilf and Petrov. ... Ilf and Petrov Ilya Ilf (Ilya Arnoldovich Faynzilberg, 1897â€“1937) and Evgeny or Yevgeny Petrov (Yevgeniy Petrovich Kataev or Katayev, 1903â€“1942) were two Soviet prose authors of the 1920s and 1930s. ... Cheaper by the Dozen is a 1948 novel by Frank Bunker Gilbreth, Jr. ... Ernestine Gilbreth Carey (April 4, 1908 â€“ November 4, 2006) was the daughter of Lillian Moller Gilbreth and Frank Bunker Gilbreth, early 20th-century pioneers of time and motion study and what would now be called organizational behavior. ...

Music

Twelve Girls Band
Twelve is the number of pitch classes in an octave, not counting the duplicated (octave) pitch. Also, the total number of major keys, (not counting enharmonic equivalents) and the total number of minor keys (also not counting equivalents). This applies only to twelve tone equal temperament, the most common tuning used today in western influenced music.
The twelfth is the interval of an octave and a fifth. Instruments such as the clarinet which behave as a stopped cylindrical pipe overblow at the twelfth.
The twelve-tone technique (also dodecaphony) is a method of musical composition devised by Arnold Schoenberg. Music using the technique is called twelve-tone music.
Twelfth Night is a progressive rock band
12 Play is an R. Kelly album.
The Number 12 Looks Like You is a mathcore band.
12 is a studio album by German singer Herbert Grönemeyer.
Twelve Deadly Cyns...and Then Some is an album by Cyndi Lauper.
D12 a rap group also known as the Dirty Dozen.

The album cover of Eastern Energy. ... In music and music theory a pitch class contains all notes that have the same name; for example, all Es, no matter which octave they are in, are in the same pitch class. ... For other uses, see Octave (disambiguation). ... In music, an enharmonic is a note which is the equivalent of some other note, but spelled differently. ... An equal temperament is a musical temperament â€” that is, a system of tuning intended to approximate some form of just intonation â€” in which an interval, usually the octave, is divided into a series of equal steps (equal frequency ratios). ... In music theory, the term interval describes the difference in pitch between two notes. ... Two soprano clarinets: a Bâ™ clarinet (left, with capped mouthpiece) and an A clarinet (right, with no mouthpiece). ... Overblowing is producing a different note in a wind instrument by forcing air harder. ... Twelve-tone technique (also dodecaphony) is a method of musical composition devised by Arnold Schoenberg. ... Musical composition is a phrase used in a number of contexts, the most commonly used being a piece of music. ... Arnold Schoenberg, Los Angeles, 1948 Arnold Schoenberg (the anglicized form of SchÃ¶nberg â€” Schoenberg changed the spelling officially when he left Germany and re-converted to Judaism in 1933), (September 13, 1874 â€“ July 13, 1951) was an Austrian and later American composer. ... Twelfth Night is a British progressive rock (or neo-progressive) band of the 1980s. ... 12 Play is the sophomore album released by R&B musician R. Kelly. ... Robert Sylvester Kelly (born January 8, 1967 in Chicago, Illinois) is a multiple Grammy Award winning American Urban R&B singer, songwriter, multi-instrumentalist, and record producer. ... This article is being considered for deletion in accordance with Wikipedias deletion policy. ... Mathcore (also known as technical metalcore, technical hardcore, and math metal) is a style of metalcore recognized for a high level of technical musicianship. ... 12 is 2007 album by German singer Herbert GrÃ¶nemeyer. ... Twelve Deadly Cyns. ... Cynthia Ann Stephanie Cyndi Lauper (born June 22, 1953) is an American Grammy Award-winning singer and Emmy Award-winning film, television and theatre actress. ... D12 (also known as D-12, The Dirty Dozen, D-Twizzy and Detroit-Twelve) is an American hip-hop group from Detroit, Michigan, which has had albums reach the top of the American, British, and Australian album charts: Devils Night in 2001 and D12 World in 2004. ...

Games

Twelve is a character in the Street Fighter video game

The Roman form of 12 (XII) is used as the symbol of the organization MJ12 in the Deus Ex computer game.

Twelve is a video game character from the Street Fighter fighting game series. ... â€œStreet Fighterâ€ redirects here. ... This article is about the video game. ...

In other fields

There are 12 in a dozen.
There are 12 ounces in a troy pound (used for precious metals), and 12 constellations in the ecliptic (or signs of the zodiac).
In the former British currency system, there were twelve pence in a shilling.
In astrology, there are 12 signs in the Zodiac.
In Greek mythology, the number of labours of Heracles was increased from ten to make twelve.
The number of dan (master) grades in judo.
In English, twelve is the number of greatest magnitude that has just one syllable.
There are normally twelve pairs of ribs in the human body.
Twelve stars are featured on the European flag.
The car number of NASCAR's Ryan Newman.
In the United States, twelve people are appointed to sit on a jury for felony trials in all but four states, and in federal and D.C. courts. The number of jurors gave the title to the play (and subsequent films) 12 Angry Men.
Twelve men have walked on the Earth's moon.
The United States of America is divided into twelve Federal Reserve Districts (Boston, New York, Philadelphia, Cleveland, Richmond, Atlanta, Chicago, St. Louis, Minneapolis, Kansas City, Dallas, and San Francisco); American paper currency has serial numbers beginning with one of twelve different letters, A through L, representing the Federal Reserve Bank from which the currency originated.
In tarot, card no. 12 is "the Hanged Man"
According to UFO conspiracy theory,

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