Joshua Potter
e8aa984b98
Add icon to distinguish Lean definitions from custom ones.
...
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.
...
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