Zeta (upper case Ζ, lower case ζ) is the sixth letter of the Greek alphabet. In the system of Greek numerals it has a value of 7. Unlike the other Greek letters, this letter did not take its name from the Phoenician letter it was derived from, zayin; it was given a new name on the pattern of eta and theta. Jump to: navigation, search Image File history File links Greek_alphabet_zeta. ... The Greek language is written in the Greek alphabet, developed in classical times (ca 9th century B.C.) and passed down to the present. ... Alpha (uppercase Α, lowercase α) is the first letter of the Greek alphabet. ... Beta (upper case Î’, lower case β) is the second letter of the Greek alphabet. ... Jump to: navigation, search Gamma (upper case Γ, lower case γ) is the third letter of the Greek alphabet. ... Delta (upper case Δ, lower case δ) is the fourth letter of the Greek alphabet. ... Epsilon (upper case Ε, lower case ε) is the fifth letter of the Greek alphabet. ... Jump to: navigation, search For other meanings of ETA, see ETA (disambig). ... Note: A theta probe is a device for measuring soil moisture. ... Iota (upper case Ι, lower case ι) is the ninth letter of the Greek alphabet. ... Kappa (upper case Κ, lower case κ) is the tenth letter of the Greek alphabet. ... Jump to: navigation, search Lambda (upper case Λ, lower case λ) is the 11th letter of the Greek alphabet. ... Jump to: navigation, search Mu (upper case Îœ, lower case μ) is the 12th letter of the Greek alphabet. ... Nu (upper case Ν, lower case ν) is the 13th letter of the Greek alphabet. ... Xi (upper case Ξ, lower case ξ) is the 14th letter of the Greek alphabet. ... Omicron (upper case Ο, lower case ο, literally small o) is the 15th letter of the Greek alphabet. ... Pi (upper case Π, lower case π) is the 16th letter of the Greek alphabet. ... Rho (upper case Ρ, lower case ρ) is the 17th letter of the Greek alphabet. ... Sigma (upper case Σ, lower case σ, alternative ς) is the 18th letter of the Greek alphabet. ... Tau (upper case Τ, lower case Ï„) is the 19th letter of the Greek alphabet. ... Upsilon (upper case , lower case ) is the 20th letter of the Greek alphabet. ... Jump to: navigation, search Phi (upper case Φ, lower case φ or ) is the 21st letter of the Greek alphabet. ... Chi (upper case Χ, lower case χ) is the 22nd letter of the Greek alphabet. ... Psi (Ψ ψ) is the 23rd letter of the Greek alphabet and has a numeric value of 700. ... Jump to: navigation, search Omega (Ω ω) is the 24th and last letter of the Greek alphabet. ... Digamma, or Wau, (upper case , lower case ) is an obsolete letter of the Greek alphabet. ... San was a letter of the Greek alphabet, appearing between Pi and Qoppa in alphabetical order, corresponding in position although not in name to the Phoenician tsade. ... Qoppa is an obsolete letter of the Greek alphabet and has a numeric value of 90. ... Sampi (Upper case Ϡ, lower case ϡ) is an obsolete letter of the Greek alphabet and has a numeric value of 900. ... The Greek language is written in the Greek alphabet, developed in classical times (ca 9th century B.C.) and passed down to the present. ... Greek numerals are a system of representing numbers using letters of the Greek alphabet. ... The Greek language is written in the Greek alphabet, developed in classical times (ca 9th century B.C.) and passed down to the present. ... The Phoenician alphabet dates from around 1000 BC and is derived from the Proto-Canaanite alphabet. ... Zayin or Zain is the seventh letter of many Semitic alphabets, including Phoenician, Hebrew, and Aramaic. ... Jump to: navigation, search ETA symbol Euskadi Ta Askatasuna, or ETA (IPA: [ˈɛːta]), is an armed Basque separatist organisation that seeks, through violence, to create an independent socialist state for the Basque people, separate from Spain and France, the states that currently control the Basque country. ... Note: A theta probe is a device for measuring soil moisture. ...

The lower-case letter ζ is used as symbol for:

• The Riemann zeta function and other zeta functions in mathematics.
• In polymer dynamics, the coefficient of viscous friction.
• In astronomy, the sixth brightest (usually) star in a constellation. See Bayer designation.

Letters related to Zeta include the Roman Z. In mathematics, the Riemann zeta function, named after Bernhard Riemann, is a function of paramount importance in number theory, because of its relation to the distribution of prime numbers. ... There are a number of mathematical functions with the name zeta function, named after the Greek letter ζ. ... Wikibooks Wikiversity has more about this subject: School of Mathematics Wikiquote has a collection of quotations related to: Mathematics Look up Mathematics on Wiktionary, the free dictionary Wikimedia Commons has more media related to: Mathematics Bogomolny, Alexander: Interactive Mathematics Miscellany and Puzzles. ... Jump to: navigation, search A polymer is a generic term used to describe a substantially long molecule. ... Astrometry: the study of the position of objects in the sky and their changes of position. ... Jump to: navigation, search Orion is a remarkable constellation, visible from most places on the globe (but not always the whole year long). ... Many of the brighter stars are given names which are known as Bayer designations. ... Jump to: navigation, search Z is the twenty-sixth and last letter of the English alphabet. ...

See also the film Z. The film Z is a 1969 political thriller directed by Costa-Gavras, with screenplay in French by the director, based on the novel of the same name by Vassilis Vassilikos. ...