Ronald L. Graham (born October 31, 1935) is a mathematician credited by the American Mathematical Society with being "one of the principle architects of the rapid development worldwide of discrete mathematics in recent years"[1]. He has done important work in scheduling theory, computational geometry, Ramsey theory, and quasi-randomness. October 31 is the 304th day of the year (305th in leap years) in the Gregorian Calendar, with 61 days remaining, as the final day of October. ... 1935 (MCMXXXV) was a common year starting on Tuesday (link will take you to calendar). ... This article is in need of attention from an expert on the subject. ... The American Mathematical Society (AMS) is dedicated to the interests of mathematical research and education, which it does with various publications and conferences as well as annual monetary awards to mathematicians. ... Discrete mathematics, sometimes called finite mathematics, is the study of mathematical structures that are fundamentally discrete, in the sense of not supporting or requiring the notion of continuity. ... In computer science, computational geometry is the study of algorithms to solve problems stated in terms of geometry. ... Ramsey theory, named for Frank P. Ramsey, is a branch of mathematics that studies the conditions under which order must appear. ... In mathematics, a low-discrepancy sequence is a sequence with the property that for all N, the subsequence x1, ..., xN is almost uniformly distributed (in a sense to be made precise), and x1, ..., xN+1 is almost uniformly distributed as well. ...

He holds the posts of Chief Scientist at the California Institute for Telecommunication and Information Technology (also known as Cal-(IT)²), and Irwin and Joan Jacobs Professor at the Department of Computer Science and Engineering of the University of California, San Diego (UCSD). The University of California, San Diego (popularly known as UCSD) is a public, coeducational university located in La Jolla, California. ...

He was born in Taft, California. In 1962, he got his Ph.D. in mathematics from the University of California, Berkeley. Taft is a city located in Kern County, California. ... Official language(s) English Capital Sacramento Largest city Los Angeles Area  - Total  - Width  - Length  - % water  - Latitude  - Longitude Ranked 3rd 410,000 km² 402. ... 1962 (MCMLXII) was a common year starting on Monday (link will take you to calendar). ... Doctor of Philosophy, or Ph. ... Mathematics is often defined as the study of topics such as quantity, structure, space, and change. ... University of California, Berkeley The University of California, Berkeley (also known as California, Cal, UCB, UC Berkeley, The University of California, or simply Berkeley) is a public, coeducational university situated east of the San Francisco Bay in Berkeley, California, overlooking the Golden Gate. ...

A 1977 paper of his discussed a problem in Ramsey theory, and gave a large number as an upper bound for its solution. This number has since become famous as the largest number ever used in a serious mathematical proof (and is listed in the Guinness Book of Records as such), and is now known as Graham's number. For the album by Ash, see 1977 (album). ... Ramsey theory, named for Frank P. Ramsey, is a branch of mathematics that studies the conditions under which order must appear. ... For information on how large numbers are named in English, see names of large numbers. ... Suresh Joachim, minutes away from breaking the ironing world record at 55 hours and 5 minutes, at Shoppers World, Brampton. ... Grahams number, named after Ronald Graham, is a very large number which is often described as the largest number that has ever been seriously used in a mathematical proof. ...

Graham popularised the concept of the Erdős number, named after the highly prolific Hungarian mathematician Paul Erdős (1913 - 1996). A mathematician's Erdős number is the number of links away from Erdős they are, where mathematician A is linked to mathematician B if they have co-authored a paper together. Graham's Erdős number was 1. Not only had he co-authored a paper with Erdős, but he was also a good friend. Erdős often stayed with him, and let him look after his mathematical papers and even his money for him. The ErdÅ‘s number, honouring the late Hungarian mathematician Paul ErdÅ‘s, one of the most prolific writers of mathematical papers, is a way of describing the collaborative distance, in regard to mathematical papers, between an author and ErdÅ‘s. ... Paul ErdÅ‘s, pictured in lecture, late in life. ... An example of Money. ...

Graham was featured in "Ripley's Believe It or Not" for being not only "one of the world's foremost mathematicians", but also "a highly skilled trampolinist and juggler", and past president of the International Jugglers Association. Ripleys Believe It or Not! deals in the bizarre—events and items so strange and unusual that it is often hard to believe that they actually exist--but they do: believe it. ...

In 2003, Graham won the American Mathematical Society's annual Steele Prize for Lifetime Achievement. The prize was awarded on January 16 that year, at the Joint Mathematics Meetings in Baltimore, Maryland. 2003 (MMIII) was a common year starting on Wednesday of the Gregorian calendar. ... The American Mathematical Society (AMS) is dedicated to the interests of mathematical research and education, which it does with various publications and conferences as well as annual monetary awards to mathematicians. ... January 16 is the 16th day of the year in the Gregorian calendar. ... Motto: The Greatest City in America (formerly The City That Reads; BELIEVE is not the official motto but rather a specific campaign) Nickname: Charm City Mob Town B-more Location in Maryland Founded 30 July 1729 Incorporated 1797 County Independent city Borough {{{borough}}} Parrish {{{parrish}}} Mayor Martin J. OMalley... Official language(s) None Capital Annapolis Largest city Baltimore Area  - Total  - Width  - Length  - % water  - Latitude  - Longitude Ranked 42nd 32,160 km² 145 km 400 km 21 37°53N to 39°43N 75°4W to 79°33W Population  - Total (2000)  - Density Ranked 19th 5,296,486 165...

As of 2003, he has published about 300 papers, and five books including Concrete Mathematics with Donald Knuth. 2003 is a common year starting on Wednesday of the Gregorian calendar, and also: The International Year of Freshwater The European Disability Year Events January events January 1 Luíz Inácio Lula Da Silva becomes the 37th President of Brazil. ... Concrete Mathematics by Ronald L. Graham, Donald E. Knuth and Oren Patashnik is a textbook that provides its readers with mathematical background that can be especially useful in computer science. ... Donald Knuth at a reception for the Open Content Alliance. ...

He is married to Fan Chung Graham (known professionally as Fan Chung), who is the Akamai Professor in Internet Mathematics at the University of California, San Diego. He has two children - a daughter, Che, and a son, Marc - from an earlier marriage. Fan Rong K Chung Graham (金芳蓉, pinyin: Jīn Fāngróng) (born October 9, 1949), known professionally as Fan Chung, is a mathematician who works mainly in the areas of spectral graph theory and extremal graph theory. ...

See also

• Graham's number
• Graham scan

Grahams number, named after Ronald Graham, is a very large number which is often described as the largest number that has ever been seriously used in a mathematical proof. ... The Graham scan, named after Ronald Graham, is a method of computing the convex hull of a given set of points in the plane with time complexity O(n log n). ...

External links

The following were all used as references.

• Graham's UCSD Faculty Research Profile
• About Ron Graham - a page summarising some aspects of Graham's life and mathematics - part of Fan Chung's website
• "Math expert coolly juggles scientific puzzles and six or seven balls" - a SignOnSanDiego.com article on Graham, by Bruce V. Bigelow, dated March 18, 2003
• [1]AMS document about the 2003 Steele Prizes (PDF format)
• AMS news release telling of Graham's winning of the 2003 Steele Prize
• Paul Erdös - biography of Erdős from the MacTutor History of Mathematics archive at the University of St Andrews (as of June 5, 2003, Graham himself has no biography article there)
• Genealogy at the Mathematics Genealogy Project