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Prototype Verification System
The Prototype Verification System (PVS) is a specification language integrated with support tools and an automated theorem prover, developed at the Computer Science Laboratory of SRI International in Menlo Park, California. PVS is based on a kernel consisting of an extension of Church's theory of types with dependent types, and is fundamentally a classical typed higher-order logic. The base types include uninterpreted types that may be introduced by the user, and built-in types such as the booleans, integers, reals, and the ordinals. Type-constructors include functions, sets, tuples, records, enumerations, and abstract data types. Predicate subtypes and dependent types can be used to introduce constraints; these constrained types may incur proof obligations (called type-correctness conditions or TCCs) during typechecking. PVS specifications are organized into parameterized theories. The system is implemented in Common Lisp, and is released under the GNU General Public License (G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PVS Screenshot
The initialism PVS may refer to: Organization * Polynesian Voyaging Society, a research and educational corporation in Hawaii * Prisoner Visitation and Support, US non-profit organization * Project Vote Smart, a US research organization * Performance of Veterinary Services, an OIE capacity building platform for the sustainable improvement of national veterinary services * Pojoaque Valley Schools Science * Persistent vegetative state * Plummer–Vinson syndrome, a rare disease * Polyvinyl siloxane, an addition reaction silicone elastomer * Potato virus S, a plant pathogenic virus * Phantom vibration syndrome * Penile vibratory stimulation, a means of inducing erection and ejaculation Technology * Palmtex Portable Videogame System, a handheld videogame console * Potentially visible set, a form of occlusion culling * Principal variation search, a negamax algorithm * Prototype Verification System, a specification language * PVS-Studio, a static code analyzer for C, C++ and C# Other * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natarajan Shankar
Natarajan Shankar is a computer scientist working at SRI International in Menlo Park, California, where he leads the Symbolic Analysis Laboratory. Education Shankar received his Ph.D. degree in computer science, under advisors Robert S. Boyer and J Strother Moore, from the University of Texas at Austin in 1986. His Ph.D. thesis was published as the book "Metamathematics, Machines, and Goedel's Proof" by Cambridge University Press in 1994. Career Shankar initially served as a research associate at Stanford University, from 1986 to 1988. In 1989, he joined SRI International's Computer Science Laboratory. While at SRI, he has used the Boyer–Moore theorem prover to prove metatheorems such as the tautology theorem, Godel's incompleteness theorem and the Church-Rosser theorem. He has contributed to the development of automated reasoning technology, deductive systems and computational engines, including the Prototype Verification System. In 2009, he was named an SRI Fellow. The fel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Free Theorem Provers
Free may refer to: Concept * Freedom, having the ability to do something, without having to obey anyone/anything * Freethought, a position that beliefs should be formed only on the basis of logic, reason, and empiricism * Emancipate, to procure political rights, as for a disenfranchised group * Free will, control exercised by rational agents over their actions and decisions * Free of charge, also known as gratis. See Gratis vs libre. Computing * Free (programming), a function that releases dynamically allocated memory for reuse * Free format, a file format which can be used without restrictions * Free software, software usable and distributable with few restrictions and no payment * Freeware, a broader class of software available at no cost Mathematics * Free object ** Free abelian group ** Free algebra ** Free group ** Free module ** Free semigroup * Free variable People * Free (surname) * Free (rapper) (born 1968), or Free Marie, American rapper and media personality ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Lisp (programming Language) Software
Common Lisp (CL) is a dialect of the Lisp programming language, published in ANSI standard document ''ANSI INCITS 226-1994 (S20018)'' (formerly ''X3.226-1994 (R1999)''). The Common Lisp HyperSpec, a hyperlinked HTML version, has been derived from the ANSI Common Lisp standard. The Common Lisp language was developed as a standardized and improved successor of Maclisp. By the early 1980s several groups were already at work on diverse successors to MacLisp: Lisp Machine Lisp (aka ZetaLisp), Spice Lisp, NIL and S-1 Lisp. Common Lisp sought to unify, standardise, and extend the features of these MacLisp dialects. Common Lisp is not an implementation, but rather a language specification. Several implementations of the Common Lisp standard are available, including free and open-source software and proprietary products. Common Lisp is a general-purpose, multi-paradigm programming language. It supports a combination of procedural, functional, and object-oriented programming paradigms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lisp (programming Language)
Lisp (historically LISP) is a family of programming languages with a long history and a distinctive, fully parenthesized prefix notation. Originally specified in 1960, Lisp is the second-oldest high-level programming language still in common use, after Fortran. Lisp has changed since its early days, and many dialects have existed over its history. Today, the best-known general-purpose Lisp dialects are Common Lisp, Scheme, Racket and Clojure. Lisp was originally created as a practical mathematical notation for computer programs, influenced by (though not originally derived from) the notation of Alonzo Church's lambda calculus. It quickly became a favored programming language for artificial intelligence (AI) research. As one of the earliest programming languages, Lisp pioneered many ideas in computer science, including tree data structures, automatic storage management, dynamic typing, conditionals, higher-order functions, recursion, the self-hosting compiler, and the read ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proof Assistants
In computer science and mathematical logic, a proof assistant or interactive theorem prover is a software tool to assist with the development of formal proofs by human-machine collaboration. This involves some sort of interactive proof editor, or other interface, with which a human can guide the search for proofs, the details of which are stored in, and some steps provided by, a computer. System comparison * ACL2 – a programming language, a first-order logical theory, and a theorem prover (with both interactive and automatic modes) in the Boyer–Moore tradition. * Coq – Allows the expression of mathematical assertions, mechanically checks proofs of these assertions, helps to find formal proofs, and extracts a certified program from the constructive proof of its formal specification. * HOL theorem provers – A family of tools ultimately derived from the LCF theorem prover. In these systems the logical core is a library of their programming language. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formal Specification Languages
Formal, formality, informal or informality imply the complying with, or not complying with, some set of requirements (forms, in Ancient Greek). They may refer to: Dress code and events * Formal wear, attire for formal events * Semi-formal attire, attire for semi-formal events * Informal attire, more controlled attire than casual but less than formal * Formal (university), official university dinner, ball or other event * School formal, official school dinner, ball or other event Logic and mathematics *Formal logic, or mathematical logic ** Informal logic, the complement, whose definition and scope is contentious *Formal fallacy, reasoning of invalid structure ** Informal fallacy, the complement *Informal mathematics, also called naïve mathematics *Formal cause, Aristotle's intrinsic, determining cause * Formal power series, a generalization of power series without requiring convergence, used in combinatorics *Formal calculation, a calculation which is systematic, but without a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carolyn Talcott
Carolyn Talcott (born June 14, 1941) is an American computer scientist known for work in automated reasoning, formal reasoning, especially as it relates to computers, cryptanalysis and systems biology. She is currently the program director of the Symbolic Systems Biology group at SRI International. She is currently the co-editor-in-chief of ''Higher-Order and Symbolic Computation''. Talcott married John McCarthy (computer scientist) and had a son. Early life and education Carolyn was born to Howard Talcott and Harriet Louise Mitchell who were Presbyterians from Idaho. Talcott earned a Ph.D. from Stanford University in 1985. Her dissertation, ''The Essence of RUM: A Theory of the Intensional and Extensional Aspects of LISP-Type Computation'', was supervised by Solomon Feferman. Awards and memberships Talcott was named an SRI Fellow in 2011. She is a member of the Association for Computing Machinery and the Association for Symbolic Logic. References External links List of public ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michael Kohlhase
Michael Kohlhase (born 13 September 1964, in Erlangen) is a German computer scientist and professor at University of Erlangen–Nuremberg, where he is head of the KWARC research group (Knowledge Adaptation and Reasoning for Content). Academic Positions Michael Kohlhase is president of the OpenMath Society and a trustee of the Interest Group for Mathematical Knowledge Management (MKM). He was a trustee of the Conference on Automated Deduction and the CALCULEMUS Interest Group. He has been Conference Chair of CADE-21 and Program Chair of the KI-2006, MKM-2005, and CALCULEMUS-2000 conferences and has served on the Programme Committees of more than three dozen international conferences. Kohlhase holds an adjunct associate professorship at Carnegie Mellon University and was (2006–2008) vice director of the Department of Safe and Secure Cognitive Systems at German Research Centre for Artificial Intelligence (DFKI) Lab Bremen. In 2014, he became a member of the Global Digital Ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Rushby
John Rushby (born 1949) is a British computer scientist now based in the United States and working for SRI International. He previously taught and did research for Manchester University and later Newcastle University. Early life and education John Rushby was born and brought up in London, where he attended Dartford Grammar School. He studied at Newcastle University in the United Kingdom, gaining his computer science BSc there in 1971 and his PhD in 1977. Career From 1974 to 1975, he was a lecturer in the Computer Science Department at Manchester University. From 1979 to 1982, he was a research associate in the Department of Computing Science at the Newcastle University. Rushby joined SRI International in Menlo Park, California in 1983. Currently he is Program Director for ''Formal Methods and Dependable Systems'' in the Computer Science Laboratory at SRI. He developed the Prototype Verification System, which is a theorem prover. Awards and memberships Rushby was the recipien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sam Owre
Sam, SAM or variants may refer to: Places * Sam, Benin * Sam, Boulkiemdé, Burkina Faso * Sam, Bourzanga, Burkina Faso * Sam, Kongoussi, Burkina Faso * Sam, Iran * Sam, Teton County, Idaho, United States, a populated place People and fictional characters * Sam (given name), a list of people and fictional characters with the given name or nickname * Sam (surname), a list of people with the surname ** Cen (surname) (岑), romanized "Sam" in Cantonese ** Shen (surname) (沈), often romanized "Sam" in Cantonese and other languages Religious or legendary figures * Sam (Book of Mormon), elder brother of Nephi * Sām, a Persian mythical folk hero * Sam Ziwa, an uthra (angel or celestial being) in Mandaeism Animals * Sam (army dog) (died 2000) * Sam (horse) (b 1815), British Thoroughbred * Sam (koala) (died 2009), rescued after 2009 bush fires in Victoria, Australia * Sam (orangutan), in the movie ''Dunston Checks In'' * Sam (ugly dog) (1990–2005), voted the world's ugliest dog in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
