con-nf

A formal consistency proof of Quine's set theory New Foundations (by leanprover-community)

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con-nf reviews and mentions

Posts with mentions or reviews of con-nf. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-04-23.
  • New Foundations is consistent – a difficult mathematical proof proved using Lean
    5 projects | news.ycombinator.com | 23 Apr 2024
    But like, you can look at what parts of Mathlib this development imports, it's mainly stuff imported by files in this subdirectory https://github.com/leanprover-community/con-nf/tree/main/Con... , and it's pretty basic things: the definition of a permutation, a cardinal number etc. Almost all of these are things that would feature in the first one or two years of an undergraduate math degree (from just quickly scanning it, the most advanced thing I could see is the definition of cofinality of ordinals). It seems practically impossible to me that someone would make a mistake when e.g. defining what a group is, in a way subtle enough to later break this advanced theorem. If you think that people could mess up that, then all of math would be in doubt.

Stats

Basic con-nf repo stats
1
52
9.6
5 days ago

The primary programming language of con-nf is Lean.


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