Joshua Potter
4f8c3383f1
Update to lean v4.3.0
2023-12-14 13:29:09 -07:00
Joshua Potter
f215a3180a
Enderton (set). Chapter 6 formatting.
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More consistent header levels throughout.
2023-11-11 15:15:03 -07:00
Joshua Potter
b97b8fbbca
Use swap theorems in pigeonhole principle proof.
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Establish precedent for embedding LaTeX proof into code.
2023-11-11 09:48:12 -07:00
Joshua Potter
4f371ac9b8
Update for use with latest Mathlib version.
2023-11-08 00:26:03 -07:00
Joshua Potter
83699dd58e
Enderton. Continue actually verifying set theorems.
2023-08-09 15:44:40 -06:00
Joshua Potter
1eff704803
Start fixing up unverified.
2023-08-09 12:59:23 -06:00
Joshua Potter
d89200fd9d
Simplify lean link formatting.
2023-08-09 10:07:18 -06:00
Joshua Potter
e8aa984b98
Add icon to distinguish Lean definitions from custom ones.
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Update to pending any proofs that were using already defined Lean
proofs.
2023-08-08 20:50:31 -06:00
Joshua Potter
63667c22e4
Normalize header sizes.
2023-06-29 17:02:20 -06:00
Joshua Potter
e869d6f2d3
Move aviary into Smullyan directory.
2023-06-29 15:30:48 -06:00
Joshua Potter
dd4340c4bd
Move `OrderedPair` and `Relation` to Enderton.
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These modules probably won't be very useful in general; there exist
better representations in Lean when dealing with ordered pairs or
relations already.
2023-06-29 15:25:59 -06:00
Joshua Potter
c65e28888d
Enderton. Fix exercise names.
2023-06-29 14:53:36 -06:00
Joshua Potter
8b5736397c
Enderton. Break out relations/ordered pairs. Exercise 6.7.
2023-06-20 15:02:09 -06:00
Joshua Potter
6d3a2d8ad0
Fix build errors in `Chapter_2.lean`.
2023-06-10 12:09:24 -06:00
Joshua Potter
49bd4871fe
Enderton. Theorem 3A.
2023-06-06 20:16:06 -06:00
Joshua Potter
2dff3f5794
Enderton. Chapter 2 exercises, 11-25.
2023-06-04 17:34:42 -06:00
Joshua Potter
4624d58924
Enderton. Continue proofs/exercises of "Axioms and Operations."
2023-05-23 15:38:33 -06:00
Joshua Potter
fd816a97bc
Enderton "Algebra of Sets" identities and create `Chapter_2.lean`.
2023-05-23 09:18:23 -06:00
Joshua Potter