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Nqthm
Nqthm is a theorem prover sometimes referred to as the Boyer–Moore theorem prover. It was a precursor to ACL2. History The system was developed by Robert S. Boyer and J Strother Moore, professors of computer science at the University of Texas, Austin. They began work on the system in 1971 in Edinburgh, Scotland. Their goal was to make a fully automatic, logic-based theorem prover. They used a variant of Pure LISP as the working logic. Definitions Definitions are formed as totally recursive functions, the system makes extensive use of rewriting and an induction heuristic that is used when rewriting and something that they called symbolic evaluation fails. The system was built on top of Lisp and had some very basic knowledge in what was called "Ground-zero", the state of the machine after bootstrapping it onto a Common Lisp implementation. This is an example of the proof of a simple arithmetic theorem. The function is part of the (called a "satellite") and is define ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ACL2
ACL2 ("A Computational Logic for Applicative Common Lisp") is a software system consisting of a programming language, created by Timothy Still it was an extensible theory in a first-order logic, and an automated theorem prover. ACL2 is designed to support automated reasoning in inductive logical theories, mostly for the purpose of software and hardware verification. The input language and implementation of ACL2 are written in Common Lisp. ACL2 is free and open-source software. Overview The ACL2 programming language is an applicative ( side-effect free) variant of Common Lisp. ACL2 is untyped. All ACL2 functions are total — that is, every function maps each object in the ACL2 universe to another object in its universe. ACL2's base theory axiomatizes the semantics of its programming language and its built-in functions. User definitions in the programming language that satisfy a ''definitional principle'' extend the theory in a way that maintains the theory's logical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
J Strother Moore
J Strother Moore (his first name is the alphabetic character "J" – not an abbreviated "J.") is a computer scientist. He is a co-developer of the Boyer–Moore string-search algorithm, Boyer–Moore majority vote algorithm, and the Boyer–Moore automated theorem prover, Nqthm. He made pioneering contributions to structure sharing including the piece table data structure and early logic programming. An example of the workings of the Boyer–Moore string search algorithm is givein Moore's website Moore received his Bachelor of Science (BS) in mathematics at Massachusetts Institute of Technology in 1970 and his Doctor of Philosophy (Ph.D.)Available at thEdinburgh Research Archive in computational logic at the University of Edinburgh in Scotland in 1973. In addition, Moore is a co-author of the ACL2 automated theorem prover and its predecessors including Nqthm, for which he received, with Robert S. Boyer and Matt Kaufmann, the 2005 ACM Software System Award. He and others u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Matt Kaufmann
Matt Kaufmann is a senior research scientist in the department of computer sciences at the University of Texas at Austin, United States. He was a recipient of the 2005 ACM Software System Award along with Robert S. Boyer and J Strother Moore J Strother Moore (his first name is the alphabetic character "J" – not an abbreviated "J.") is a computer scientist. He is a co-developer of the Boyer–Moore string-search algorithm, Boyer–Moore majority vote algorithm, and the Boyer–M ..., for his work on the Boyer-Moore Theorem Prover. , Association for Computing Machinery, 2005. Referenc ...
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ACM Software System Award
The ACM Software System Award is an annual award that honors people or an organization "for developing a software system that has had a lasting influence, reflected in contributions to concepts, in commercial acceptance, or both". It is awarded by the Association for Computing Machinery (ACM) since 1983, with a cash prize sponsored by IBM of currently $35,000. Recipients The following is a list of recipients of the ACM Software System Award: See also * Software system * List of computer science awards References External links Software System Award — ACM Awards{{Association for Computing Machinery Awards established in 1983 Software System Award The ACM Software System Award is an annual award that honors people or an organization "for developing a software system that has had a lasting influence, reflected in contributions to concepts, in commercial acceptance, or both". It is awarded by ... Computer science awards ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Automated Theorem Proving
Automated theorem proving (also known as ATP or automated deduction) is a subfield of automated reasoning and mathematical logic dealing with proving mathematical theorems by computer programs. Automated reasoning over mathematical proof was a major impetus for the development of computer science. Logical foundations While the roots of formalised logic go back to Aristotle, the end of the 19th and early 20th centuries saw the development of modern logic and formalised mathematics. Frege's '' Begriffsschrift'' (1879) introduced both a complete propositional calculus and what is essentially modern predicate logic. His '' Foundations of Arithmetic'', published 1884, expressed (parts of) mathematics in formal logic. This approach was continued by Russell and Whitehead in their influential ''Principia Mathematica'', first published 1910–1913, and with a revised second edition in 1927. Russell and Whitehead thought they could derive all mathematical truth using axioms and inferen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GitHub
GitHub, Inc. () is an Internet hosting service for software development and version control using Git. It provides the distributed version control of Git plus access control, bug tracking, software feature requests, task management, continuous integration, and wikis for every project. Headquartered in California, it has been a subsidiary of Microsoft since 2018. It is commonly used to host open source software development projects. As of June 2022, GitHub reported having over 83 million developers and more than 200 million repositories, including at least 28 million public repositories. It is the largest source code host . History GitHub.com Development of the GitHub.com platform began on October 19, 2007. The site was launched in April 2008 by Tom Preston-Werner, Chris Wanstrath, P. J. Hyett and Scott Chacon after it had been made available for a few months prior as a beta release. GitHub has an annual keynote called GitHub Universe. Organizat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
English Language
English is a West Germanic language of the Indo-European language family, with its earliest forms spoken by the inhabitants of early medieval England. It is named after the Angles, one of the ancient Germanic peoples that migrated to the island of Great Britain. Existing on a dialect continuum with Scots, and then closest related to the Low Saxon and Frisian languages, English is genealogically West Germanic. However, its vocabulary is also distinctively influenced by dialects of France (about 29% of Modern English words) and Latin (also about 29%), plus some grammar and a small amount of core vocabulary influenced by Old Norse (a North Germanic language). Speakers of English are called Anglophones. The earliest forms of English, collectively known as Old English, evolved from a group of West Germanic (Ingvaeonic) dialects brought to Great Britain by Anglo-Saxon settlers in the 5th century and further mutated by Norse-speaking Viking settlers starting in the 8 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Association For Computing Machinery
The Association for Computing Machinery (ACM) is a US-based international learned society for computing. It was founded in 1947 and is the world's largest scientific and educational computing society. The ACM is a non-profit professional membership group, claiming nearly 110,000 student and professional members . Its headquarters are in New York City. The ACM is an umbrella organization for academic and scholarly interests in computer science ( informatics). Its motto is "Advancing Computing as a Science & Profession". History In 1947, a notice was sent to various people: On January 10, 1947, at the Symposium on Large-Scale Digital Calculating Machinery at the Harvard computation Laboratory, Professor Samuel H. Caldwell of Massachusetts Institute of Technology spoke of the need for an association of those interested in computing machinery, and of the need for communication between them. ..After making some inquiries during May and June, we believe there is ample interest to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ACM 2005 Software System Award
ACM or A.C.M. may refer to: Aviation * AGM-129 ACM, 1990–2012 USAF cruise missile * Air chief marshal * Air combat manoeuvring or dogfighting * Air cycle machine * Arica Airport (Colombia) (IATA: ACM), in Arica, Amazonas, Colombia Computing * Abstract Control Model, for USB to act as a serial port * Association for Computing Machinery, a US-based international learned society for computing * Asynchronous communication mechanism * Audio Compression Manager, Microsoft Windows codec manager Education * Allegany College of Maryland * Associated Colleges of the Midwest * Association for College Management Music * Academy of Contemporary Music, in Guildford, England, UK * Academy of Country Music * Association for Contemporary Music, in the Russian Federation Organizations or businesses * Alliance for Community Media * American Center for Mobility * American Ceylon Mission * Anaconda Copper Mining Company * Anti-Coalition Militia, anti-NATO Taliban in Afghanistan * Anti-cult mov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Debora Weber-Wulff
Debora Racing cars is a small French car builder, popular with private racing teams, based in Besançon, France. Teams generally use their chassis to take part in Le Mans style endurance racing such as Magny Cours, Jarama and le Mans. Drivers also tend to be French with Bruno Boccard and David Dusseau being two of the more famous. Debora use an LMP Le Mans Prototype type 1 body shell over a mid-engined chassis with open driving seat in the bodywork. Their Type 2 LMP with closed bodywork owes much to the Courage and is a truly beautiful piece of engineering. Engines have been known to come from a 3-litre BMW and a 2-litre Ford Cosworth Turbo on the Jarama racetrack 1997. Sponsored by Waterair in 1998 the Debora two car team did a little better with one of the cars coming in 15th a mere 19 laps behind the winner. Later in '98 at the ISRS world championships, Debora carried off the trophy for SR2 driven by De Castelli, Jakubowski & Bruneau. In July 2000 during the US Le Mans ser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kenneth Kunen
Herbert Kenneth Kunen (August 2, 1943August 14, 2020) was a professor of mathematics at the University of Wisconsin–Madison who worked in set theory and its applications to various areas of mathematics, such as set-theoretic topology and measure theory. He also worked on non-associative algebraic systems, such as loops, and used computer software, such as the Otter theorem prover, to derive theorems in these areas. Personal life Kunen was born in New York City in 1943 and died in 2020. He lived in Madison, Wisconsin, with his wife Anne, with whom he had two sons, Isaac and Adam. Education Kunen completed his undergraduate degree at the California Institute of Technology and received his Ph.D. in 1968 from Stanford University, where he was supervised by Dana Scott. Career and research Kunen showed that if there exists a nontrivial elementary embedding ''j'' : ''L'' → ''L'' of the constructible universe, then 0# exists. He proved the consistency o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris–Harrington Theorem
In mathematical logic, the Paris–Harrington theorem states that a certain combinatorial principle in Ramsey theory, namely the strengthened finite Ramsey theorem, is true, but not provable in Peano arithmetic. This has been described by some (such as the editor of the ''Handbook of Mathematical Logic'' in the references below) as the first "natural" example of a true statement about the integers that could be stated in the language of arithmetic, but not proved in Peano arithmetic; it was already known that such statements existed by Gödel's first incompleteness theorem. Strengthened finite Ramsey theorem The strengthened finite Ramsey theorem is a statement about colorings and natural numbers and states that: : For any positive integers ''n'', ''k'', ''m'', such that ''m ≥ n'', one can find ''N'' with the following property: if we color each of the ''n''-element subsets of ''S'' = with one of ''k'' colors, then we can find a subset ''Y'' of ''S'' with at least ''m'' elements ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
