Communicating formal proofs : the case of Flyspeck

C. Tankink, C. Kaliszyk, J. Urban, J.H. Geuvers

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

2 Citations (Scopus)


We introduce a platform for presenting and cross-linking formal and informal proof developments together. The platform supports writing natural language ‘narratives’ that include islands of formal text. The formal text contains hyperlinks and gives on-demand state information at every proof step. We argue that such a system significantly lowers the threshold for understanding formal development and facilitates collaboration on informal and formal parts of large developments. As an example, we show the Flyspeck formal development (in HOL Light) and the Flyspeck informal mathematical text as a narrative linked to the formal development. To make this possible, we use the Agora system, a MathWiki platform developed at Nijmegen which has so far mainly been used with the Coq theorem prover: we show that the system itself is generic and easily adapted to the HOL Light case.
Original languageEnglish
Title of host publicationInteractive Theorem Proving (4th International Conference, ITP 2013, Rennes, France, July 22-26, 2013. Proceedings)
EditorsS. Blazy, C. Paulin-Mohring, D. Pichardie
Place of PublicationBerlin
ISBN (Print)978-3-642-39633-5
Publication statusPublished - 2013

Publication series

NameLecture Notes in Computer Science
ISSN (Print)0302-9743


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