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Feb 15 at 23:22 history edited Timothy Chow CC BY-SA 4.0
Fixed link
Nov 27, 2023 at 21:01 history edited David Roberts CC BY-SA 4.0
full bibliographic reference
Apr 23, 2023 at 13:40 comment added Timothy Chow @CarlMummert It still works for me. There's also a Wayback Machine copy.
Jun 26, 2020 at 12:44 history edited Lawrence Paulson CC BY-SA 4.0
added 101 characters in body
Apr 24, 2019 at 13:20 comment added Carl Mummert The link in this answer no longer works.
Dec 25, 2013 at 2:12 comment added Todd Trimble Thank you very much, @TimothyChow, for the clarification and information.
Dec 25, 2013 at 1:51 comment added Timothy Chow This is not a non-answer. Świerczkowski shows that the proof of Gödel's theorem can be formalized in a set-theoretic system much weaker than ZFC, and this proof was the starting point for Lawrence Paulson's formalization of the theorem in Isabelle/HOL. See Paulson's paper, "A Machine-Assisted Proof of Gödel's Incompleteness Theorems for the Theory of Hereditarily Finite Sets," which he seems to be too modest to mention himself.
Dec 24, 2013 at 23:26 comment added Todd Trimble Several users consider this as a non-answer to the actual question.
Dec 24, 2013 at 19:58 history edited Lawrence Paulson CC BY-SA 3.0
deleted 2 characters in body
Dec 24, 2013 at 19:04 review Late answers
Dec 24, 2013 at 19:08
Dec 24, 2013 at 18:45 history answered Lawrence Paulson CC BY-SA 3.0