Coq proof assistant

The final release of Coq 8.7.0 is available. Coq 8.7 includes: A large amount of work on cleaning and speeding up the code base, notably the work of Pierre-Marie Pédrot on making the tactic-level system insensitive to existential ... [More] variable expansion, providing a safer API to plugin writers and making the code more robust. New tactics: Variants of tactics supporting existential variables eassert, eenough, etc. by Hugo Herbelin; Tactics extensionality in H and inversion_sigma by Jason Gross; specialize with accepting partial bindings by Pierre Courtieu. Cumulative Polymorphic Inductive Types, allowing cumulativity of universes to go through applied inductive types, by Amin Timany and Matthieu Sozeau. The SSReflect plugin by Georges Gonthier, Assia Mahboubi and Enrico Tassi was integrated (with its documentation in the reference manual) by Maxime Dénès, Assia Mahboubi and Enrico Tassi. The coq_makefile tool was completely redesigned to improve its maintainability and the extensibility of generated Makefiles, and to make _CoqProject files more palatable to IDEs by Enrico Tassi. More information can be found in the CHANGES file. Feedback and bug reports are extremely welcome. This is the second release of Coq developed on a time-based development cycle. Its development spanned 9 months from the release of Coq 8.6 and was based on a public road-map. It attracted many external contributions. Code reviews and continuous integration testing were systematically used before integration of new features, with an important focus given to compatibility and performance issues. [Less]

The second beta release of Coq 8.7 is available for testing. Coq 8.7 includes: A large amount of work on cleaning and speeding up the code base, notably the work of Pierre-Marie Pédrot on making the tactic-level system insensitive to ... [More] existential variable expansion, providing a safer API to plugin writers and making the code more robust. New tactics: Variants of tactics supporting existential variables eassert, eenough, etc. by Hugo Herbelin; Tactics extensionality in H and inversion_sigma by Jason Gross; specialize with accepting partial bindings by Pierre Courtieu. Cumulative Polymorphic Inductive Types, allowing cumulativity of universes to go through applied inductive types, by Amin Timany and Matthieu Sozeau. The SSReflect plugin by Georges Gonthier, Assia Mahboubi and Enrico Tassi was integrated (with its documentation in the reference manual) by Maxime Dénès, Assia Mahboubi and Enrico Tassi. The coq_makefile tool was completely redesigned to improve its maintainability and the extensibility of generated Makefiles, and to make _CoqProject files more palatable to IDEs by Enrico Tassi. More information can be found in the CHANGES file. Feedback and bug reports are extremely welcome. This is the second release of Coq developed on a time-based development cycle. Its development spanned 9 months from the release of Coq 8.6 and was based on a public road-map. It attracted many external contributions. Code reviews and continuous integration testing were systematically used before integration of new features, with an important focus given to compatibility and performance issues. [Less]

The second beta release of Coq 8.7 is available for testing. Coq 8.7 includes: A large amount of work on cleaning and speeding up the code base, notably the work of Pierre-Marie Pédrot on making the tactic-level system insensitive to ... [More] existential variable expansion, providing a safer API to plugin writers and making the code more robust. New tactics: Variants of tactics supporting existential variables eassert, eenough, etc. by Hugo Herbelin; Tactics extensionality in H and inversion_sigma by Jason Gross; specialize with accepting partial bindings by Pierre Courtieu. Cumulative Polymorphic Inductive Types, allowing cumulativity of universes to go through applied inductive types, by Amin Timany and Matthieu Sozeau. The SSReflect plugin by Georges Gonthier, Assia Mahboubi and Enrico Tassi was integrated (with its documentation in the reference manual) by Maxime Dénès, Assia Mahboubi and Enrico Tassi. The coq_makefile tool was completely redesigned to improve its maintainability and the extensibility of generated Makefiles, and to make _CoqProject files more palatable to IDEs by Enrico Tassi. More information can be found in the CHANGES file. Feedback and bug reports are extremely welcome. This is the second release of Coq developed on a time-based development cycle. Its development spanned 9 months from the release of Coq 8.6 and was based on a public road-map. It attracted many external contributions. Code reviews and continuous integration testing were systematically used before integration of new features, with an important focus given to compatibility and performance issues. [Less]

The first beta release of Coq 8.7 is available for testing. Coq 8.7 includes: A large amount of work on cleaning and speeding up the code base, notably the work of Pierre-Marie Pédrot on making the tactic-level system insensitive to ... [More] existential variable expansion, providing a safer API to plugin writers and making the code more robust. New tactics: Variants of tactics supporting existential variables eassert, eenough, etc. by Hugo Herbelin; Tactics extensionality in H and inversion_sigma by Jason Gross; specialize with accepting partial bindings by Pierre Courtieu. Cumulative Polymorphic Inductive Types, allowing cumulativity of universes to go through applied inductive types, by Amin Timany and Matthieu Sozeau. The SSReflect plugin by Georges Gonthier, Assia Mahboubi and Enrico Tassi was integrated (with its documentation in the reference manual) by Maxime Dénès, Assia Mahboubi and Enrico Tassi. The coq_makefile tool was completely redesigned to improve its maintainability and the extensibility of generated Makefiles, and to make _CoqProject files more palatable to IDEs by Enrico Tassi. More information can be found in the CHANGES file. Feedback and bug reports are extremely welcome. This is the second release of Coq developed on a time-based development cycle. Its development spanned 9 months from the release of Coq 8.6 and was based on a public road-map. It attracted many external contributions. Code reviews and continuous integration testing were systematically used before integration of new features, with an important focus given to compatibility and performance issues. [Less]

The first beta release of Coq 8.7 is available for testing. Coq 8.7 includes: A large amount of work on cleaning and speeding up the code base, notably the work of Pierre-Marie Pédrot on making the tactic-level system insensitive to ... [More] existential variable expansion, providing a safer API to plugin writers and making the code more robust. New tactics: Variants of tactics supporting existential variables eassert, eenough, etc. by Hugo Herbelin; Tactics extensionality in H and inversion_sigma by Jason Gross; specialize with accepting partial bindings by Pierre Courtieu. Cumulative Polymorphic Inductive Types, allowing cumulativity of universes to go through applied inductive types, by Amin Timany and Matthieu Sozeau. The SSReflect plugin by Georges Gonthier, Assia Mahboubi and Enrico Tassi was integrated (with its documentation in the reference manual) by Maxime Dénès, Assia Mahboubi and Enrico Tassi. The coq_makefile tool was completely redesigned to improve its maintainability and the extensibility of generated Makefiles, and to make _CoqProject files more palatable to IDEs by Enrico Tassi. More information can be found in the CHANGES file. Feedback and bug reports are extremely welcome. This is the second release of Coq developed on a time-based development cycle. Its development spanned 9 months from the release of Coq 8.6 and was based on a public road-map. It attracted many external contributions. Code reviews and continuous integration testing were systematically used before integration of new features, with an important focus given to compatibility and performance issues. [Less]

The alleged "hack" of coq.inria.fr that led to several days of downtime for investigations was nothing more than a spam bug report. More details here.

Version 8.6.1 of Coq is available. It fixes several bugs of version 8.6. More information can be found in the CHANGES file. Feedback and bug reports are extremely welcome.

Version 8.6.1 of Coq is available. It fixes several bugs of version 8.6. More information can be found in the CHANGES file. Feedback and bug reports are extremely welcome.

The final release of Coq 8.6 is available. Coq 8.6 includes: A new, faster state-of-the-art universe constraint checker by Jacques-Henri Jourdan. In CoqIDE and other asynchronous interfaces, more fine-grained asynchronous processing and error ... [More] reporting by Enrico Tassi, making Coq capable of recovering from errors and continuing to process the document. Better access to the proof engine features from Ltac: goal management primitives, range selectors and a typeclasses eauto engine handling multiple goals and multiple successes, by Cyprien Mangin, Matthieu Sozeau and Arnaud Spiwack. Tactic behavior uniformization and specification, generalization of intro-patterns by Hugo Herbelin and others. A brand new warning system allowing to control warnings, turn them into errors or ignore them selectively by Maxime Dénès, Guillaume Melquiond, Pierre-Marie Pédrot and others. Irrefutable patterns in abstractions, by Daniel de Rauglaudre. The ssreflect subterm selection algorithm by Georges Gonthier and Enrico Tassi, now accessible to tactic writers through the ssrmatching plugin. LtacProf, a profiler for Ltac by Jason Gross, Paul Steckler, Enrico Tassi and Tobias Tebbi. More information can be found in the CHANGES file. Feedback and bug reports are extremely welcome. Coq 8.6 initiates a time-based release cycle, with a major version being released every 10 months. The roadmap is also made public. To date, Coq 8.6 contains more external contributions than any previous Coq version. Code reviews were systematically done before integration of new features, with an important focus given to compatibility and performance issues. [Less]

The final release of Coq 8.6 is available. Coq 8.6 includes: A new, faster state-of-the-art universe constraint checker by Jacques-Henri Jourdan. In CoqIDE and other asynchronous interfaces, more fine-grained asynchronous processing and error ... [More] reporting by Enrico Tassi, making Coq capable of recovering from errors and continuing to process the document. Better access to the proof engine features from Ltac: goal management primitives, range selectors and a typeclasses eauto engine handling multiple goals and multiple successes, by Cyprien Mangin, Matthieu Sozeau and Arnaud Spiwack. Tactic behavior uniformization and specification, generalization of intro-patterns by Hugo Herbelin and others. A brand new warning system allowing to control warnings, turn them into errors or ignore them selectively by Maxime Dénès, Guillaume Melquiond, Pierre-Marie Pédrot and others. Irrefutable patterns in abstractions, by Daniel de Rauglaudre. The ssreflect subterm selection algorithm by Georges Gonthier and Enrico Tassi, now accessible to tactic writers through the ssrmatching plugin. LtacProf, a profiler for Ltac by Jason Gross, Paul Steckler, Enrico Tassi and Tobias Tebbi. More information can be found in the CHANGES file. Feedback and bug reports are extremely welcome. Coq 8.6 initiates a time-based release cycle, with a major version being released every 10 months. The roadmap is also made public. To date, Coq 8.6 contains more external contributions than any previous Coq version. Code reviews were systematically done before integration of new features, with an important focus given to compatibility and performance issues. [Less]