2013
DOI: 10.1007/978-3-642-39634-2_14
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A Machine-Checked Proof of the Odd Order Theorem

Abstract: Abstract. This paper reports on a six-year collaborative effort that culminated in a complete formalization of a proof of the Feit-Thompson Odd Order Theorem in the Coq proof assistant. The formalized proof is constructive, and relies on nothing but the axioms and rules of the foundational framework implemented by Coq. To support the formalization, we developed a comprehensive set of reusable libraries of formalized mathematics, including results in finite group theory, linear algebra, Galois theory, and the t… Show more

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Cited by 237 publications
(181 citation statements)
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“…The largest single piece of formalized mathematics to this day is a proof of the Feit-Thompson Odd Order Theorem, done by collaborative efforts of 15 mathematicians over a period of six years ( [7]). The proof itself which spans 250 pages of mathematics was formalized into more than 150,000 lines of code with roughly 4,000 definitions and 13,000 theorems.…”
Section: Introductionmentioning
confidence: 99%
“…The largest single piece of formalized mathematics to this day is a proof of the Feit-Thompson Odd Order Theorem, done by collaborative efforts of 15 mathematicians over a period of six years ( [7]). The proof itself which spans 250 pages of mathematics was formalized into more than 150,000 lines of code with roughly 4,000 definitions and 13,000 theorems.…”
Section: Introductionmentioning
confidence: 99%
“…However, the verification of the validity of the proof was highly difficult at 1980s [7] since its total number of pages are about 300. Gonthier et al [8] verified the proof by using SSReflect which is an extension of the proof assistant Coq. The formalized theorem and lemmas which are formalized in the process of the verification are utilized for the formalization of mathematical science.…”
Section: Introductionmentioning
confidence: 99%
“…This is foreshadowed by the computer-assisted proofs of Fowler, and of course of Appel-Haken of "Four colors suffice" fame. It has come closer with recent formal (as opposed to computer-assisted) proofs of the Jordan Curve Theorem [22], the Four-Colour Theorem [17], the Feit-Thompson Theorem of finite group theory [18], the Prime Number Theorem (both the elementary [2] and non-elementary [27] proofs) and Kepler's Conjecture [23].…”
mentioning
confidence: 97%
“…Theorems would be discovered and proved, even more so than in the "big machinery" scenario, in large, coordinated groups; the publication [18] describing the proof of Feit-Thompson, for instance, lists no fewer than fifteen co-authors! The possibility of simultaneous discovery, and still less of repeated discovery, would surely be sadly diminished.…”
mentioning
confidence: 99%