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Harry L. Nelson
Harry Lewis Nelson (January 8, 1932 - May 14, 2024) was an American mathematician and computer programmer. He was a member of the team that won the World Computer Chess Championship in 1983 and 1986, and was a co-discoverer of the 27th Mersenne prime in 1979 (at the time, the largest known prime number). He also served as editor of the ''Journal of Recreational Mathematics'' for five years. Most of his professional career was spent at Lawrence Livermore National Laboratory where he worked with some of the earliest supercomputers. He was particularly noted as one of the world's foremost experts in writing optimized assembly language routines for the Cray-1 and Cray X-MP computers. Nelson had a lifelong interest in puzzles of all types, and founded the MiniMax Game Company, a small venture that helps puzzle inventors to develop and market their products. In 1994, Nelson donated his correspondence from his days as editor of the ''Journal of Recreational Mathematics'' to the University ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematician
A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change. History One of the earliest known mathematicians were Thales of Miletus (c. 624–c.546 BC); he has been hailed as the first true mathematician and the first known individual to whom a mathematical discovery has been attributed. He is credited with the first use of deductive reasoning applied to geometry, by deriving four corollaries to Thales' Theorem. The number of known mathematicians grew when Pythagoras of Samos (c. 582–c. 507 BC) established the Pythagorean School, whose doctrine it was that mathematics ruled the universe and whose motto was "All is number". It was the Pythagoreans who coined the term "mathematics", and with whom the study of mathematics for its own sake begins. The first woman mathematician recorded by history was Hypati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beaver, Pennsylvania
Beaver is a borough in and the county seat of Beaver County in the U.S. state of Pennsylvania. It is located at the confluence of the Beaver and Ohio Rivers, approximately northwest of Pittsburgh. As of the 2020 census, the borough population was 4,838. The borough is a Tree City USA community. Robert Linn was the mayor of Beaver for 58 years, from 1946 to 2004, making him one of the longest-serving mayors in the United States. History The area around Beaver was once home to Shawnee Indians, who were later displaced by groups such as the Mingoes and the Lenape. It was part of the Ohio Country that was in dispute during the French and Indian War. Beaver became the site of Fort McIntosh, a Revolutionary War era Patriot frontier fort. After the war, the fort was the home of the First American Regiment, the oldest active unit in the US Army. The fort was abandoned in 1788 and razed a short time later. By then, the frontier had moved westward and there was no further need ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1932 Births
Year 193 ( CXCIII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Sosius and Ericius (or, less frequently, year 946 ''Ab urbe condita''). The denomination 193 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * January 1 – Year of the Five Emperors: The Roman Senate chooses Publius Helvius Pertinax, against his will, to succeed the late Commodus as Emperor. Pertinax is forced to reorganize the handling of finances, which were wrecked under Commodus, to reestablish discipline in the Roman army, and to suspend the food programs established by Trajan, provoking the ire of the Praetorian Guard. * March 28 – Pertinax is assassinated by members of the Praetorian Guard, who storm the imperial palace. The Empire is auctioned off ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Living People
Related categories * :Year of birth missing (living people) / :Year of birth unknown * :Date of birth missing (living people) / :Date of birth unknown * :Place of birth missing (living people) / :Place of birth unknown * :Year of death missing / :Year of death unknown * :Date of death missing / :Date of death unknown * :Place of death missing / :Place of death unknown * :Missing middle or first names See also * :Dead people * :Template:L, which generates this category or death years, and birth year and sort keys. : {{DEFAULTSORT:Living people 21st-century people People by status ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Recreational Mathematicians
Recreation is an activity of leisure, leisure being discretionary time. The "need to do something for recreation" is an essential element of human biology and psychology. Recreational activities are often done for enjoyment, amusement, or pleasure and are considered to be "fun". Etymology The term ''recreation'' appears to have been used in English first in the late 14th century, first in the sense of "refreshment or curing of a sick person", and derived turn from Latin (''re'': "again", ''creare'': "to create, bring forth, beget"). Prerequisites to leisure People spend their time on activities of daily living, work, sleep, social duties and leisure, the latter time being free from prior commitments to physiologic or social needs, a prerequisite of recreation. Leisure has increased with increased longevity and, for many, with decreased hours spent for physical and economic survival, yet others argue that time pressure has increased for modern people, as they are committed to too ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Academic Journal Editors
American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, people who self-identify their ancestry as "American" ** American English, the set of varieties of the English language native to the United States ** Native Americans in the United States, indigenous peoples of the United States * American, something of, from, or related to the Americas, also known as "America" ** Indigenous peoples of the Americas * American (word), for analysis and history of the meanings in various contexts Organizations * American Airlines, U.S.-based airline headquartered in Fort Worth, Texas * American Athletic Conference, an American college athletic conference * American Recordings (record label), a record label previously known as Def American * American University, in Washington, D.C. Sports teams Soccer * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Chess People
A computer is a machine that can be programmed to carry out sequences of arithmetic or logical operations (computation) automatically. Modern digital electronic computers can perform generic sets of operations known as programs. These programs enable computers to perform a wide range of tasks. A computer system is a nominally complete computer that includes the hardware, operating system (main software), and peripheral equipment needed and used for full operation. This term may also refer to a group of computers that are linked and function together, such as a computer network or computer cluster. A broad range of industrial and consumer products use computers as control systems. Simple special-purpose devices like microwave ovens and remote controls are included, as are factory devices like industrial robots and computer-aided design, as well as general-purpose devices like personal computers and mobile devices like smartphones. Computers power the Internet, which links bil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Computer Programmers
American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, people who self-identify their ancestry as "American" ** American English, the set of varieties of the English language native to the United States ** Native Americans in the United States, indigenous peoples of the United States * American, something of, from, or related to the Americas, also known as "America" ** Indigenous peoples of the Americas * American (word), for analysis and history of the meanings in various contexts Organizations * American Airlines, U.S.-based airline headquartered in Fort Worth, Texas * American Athletic Conference, an American college athletic conference * American Recordings (record label), a record label previously known as Def American * American University, in Washington, D.C. Sports teams Soccer * B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Puzzle Party
Jerry Slocum is an American historian, collector and author specializing on the field of mechanical puzzles. He worked as an engineer at Hughes Aircraft prior to retiring and dedicating his life to puzzles. His personal puzzle collection, numbering over 40,000 mechanical puzzles and 4,500 books, is believed to be the world's largest. In 2006, the Association of Game & Puzzle Collectors awarded Slocum with the Sam Loyd Award. In 2006, Slocum donated over 30,000 puzzles to the Lilly Library at Indiana University: marking the first time a major collection of puzzles was made available in an academic setting. Slocum's first book, ''Puzzles Old and New'', published in 1986, was the first comprehensive book to include all types of mechanical puzzles with hundreds of color illustrations of antique puzzles. In the introduction Martin Gardner predicted that the book would "remain a classic for decades." Slocum has appeared on '' The Tonight Show Starring Johnny Carson'', ''Martha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Levy (chess Player)
David Neil Laurence Levy (born 14 March 1945) is an English International Master of chess and a businessman. He is noted for his involvement with computer chess and artificial intelligence, and as the founder of the Computer Olympiads and the Mind Sports Olympiads. He has written more than 40 books on chess and computers. Life and career Levy was born in London and went to Queen Elizabeth's School, Barnet. He won the London Junior Chess Championship in 1965 and 1966.Harry Golombek, ''Golombek's Encyclopedia of Chess'', Crown Publishers, New York, p. 180. . He won the Scottish Chess Championship in 1968. He tied for fifth place at the 1969 Praia da Rocha Zonal tournament, scoring over two-thirds and thereby obtaining the title of International Master. He played on Board One for the Scottish team at the 1972 Chess Olympiad in Skopje, Yugoslavia, scoring six wins, five draws, and seven losses (47.2%). Levy became a professional chess writer in 1971. Several of his books were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hans Berliner
Hans Jack Berliner (January 27, 1929 – January 13, 2017) was a Professor of Computer Science at Carnegie Mellon University, and was the World Correspondence Chess Champion, from 1965–1968. He was a Grandmaster of Correspondence Chess. He directed the construction of the chess computer HiTech, and was also a published chess writer. Early life Berliner was born January 27, 1929 in Berlin to a Jewish family. One of his classmates at school was future Estonian President Lennart Meri, whose father was serving as Estonia's ambassador to Germany. In 1937, Berliner's family moved to the United States to escape Nazi persecution, taking up residence in Washington, D.C. He learned chess at age 13, and "it quickly became his main preoccupation." Berliner is mentioned in "How I Started To Write", an essay by Carlos Fuentes, where he is described as "an extremely brilliant boy", with "a brilliant mathematical mind". "I shall always remember his face, dark and trembling, his aquiline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HiTech
HiTech is a chess machine built at Carnegie Mellon University under the direction of World Correspondence Chess Champion Dr. Hans J. Berliner, by Berliner, Carl Ebeling, Murray Campbell, and Gordon Goetsch. HiTech was the first computer chess system to reach the 2400 (senior master) USCF rating level. It won the Pennsylvania State Chess Championship twice. HiTech won the 1985 and 1989 editions of the North American Computer Chess Championship. In 1988 HiTech defeated GM Arnold Denker 3½-½ in a match (though Denker was at the time well past his best, with an Elo rating of 2300). HiTech was one of two competing chess projects at Carnegie Mellon; the one that would succeed in the quest of beating the World Chess Champion was its rival ChipTest (the predecessor of IBM's Deep Thought and Deep Blue Deep Blue may refer to: Film * ''Deep Blues: A Musical Pilgrimage to the Crossroads'', a 1992 documentary film about Mississippi Delta blues music * Deep Blue (2001 film), ''De ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
