Joshua Potter
f1a10c6877
Enderton (set). Wrap original pigeonhole expression into aux.
2023-09-14 10:00:39 -06:00
Joshua Potter
91fc8436da
Prove the pigeonhole principle. ( #7 )
2023-09-14 09:00:28 -06:00
Joshua Potter
66ca483671
Enderton (set). Isomorphism from ℕ to peano systems.
2023-09-09 05:15:52 -06:00
Joshua Potter
7e1eb8fdfb
Require simp to make progress.
2023-09-08 18:50:44 -06:00
Joshua Potter
3bf6f13055
Enderton (set). Add Lean scaffolding for finite set theorems/bijections.
2023-08-26 18:43:44 -06:00
Joshua Potter
a00a5f5523
Enderton (set). Work through backlog of theorems and exercises.
2023-08-26 18:41:33 -06:00
Joshua Potter
306acd2975
Enderton (set). Begin adding Chapter 6 lean theorems.
2023-08-23 18:23:28 -06:00
Joshua Potter
9fe4f2ee78
Enderton (logic). Most of exercises 6.1.
2023-08-20 07:02:37 -06:00
Joshua Potter
a4f72d0a84
Enderton. Set/logic exercises and truth table macros.
2023-08-17 21:32:05 -06:00
Joshua Potter
f990a7a30a
Enderton. Reorder theorems in Lean modules and add set/logic prompts.
2023-08-17 18:04:20 -06:00
Joshua Potter
2c1547aee9
Enderton (set). Equinumerosity theorems.
2023-08-17 12:56:39 -06:00
Joshua Potter
8f833f9353
Enderton (set). Begin chapter 6 exercises.
2023-08-16 12:46:16 -06:00
Joshua Potter
cbf4528bbc
Enderton (logic). Begin writing out Lean proofs for Exercises 1.
2023-08-14 20:37:09 -06:00
Joshua Potter
a4cecbffd8
Enderton (set). Chapter 4 exercises.
2023-08-12 13:53:51 -06:00
Joshua Potter
21a3e78106
Enderton (set). Continue refining ordering theorems/exercises.
2023-08-11 18:58:36 -06:00
Joshua Potter
656530fed9
Enderton (set). Theorem 4N, Corollary 4P.
2023-08-11 08:17:30 -06:00
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
e08e68bbc3
Enderton. Fix lemma 3B header.
2023-08-09 10:10:11 -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.
...
Update to pending any proofs that were using already defined Lean
proofs.
2023-08-08 20:50:31 -06:00
Joshua Potter
77684120d9
Enderton. Prove ordering theorems and fix injective successor proof.
2023-08-04 18:26:15 -06:00
Joshua Potter
5dfb2f12cf
Enderton. Finish ordering on natural numbers exercises.
2023-08-04 09:44:58 -06:00
Joshua Potter
9b8ddd2b0d
Enderton. Begin progressing through natural numbers.
2023-07-19 19:25:44 -06:00
Joshua Potter
4679b66abe
Enderton. Finish ordering relation exercises/theorems.
2023-07-18 16:34:06 -06:00
Joshua Potter
668c005c91
Enderton. Ordering relations exercises.
2023-07-14 15:09:33 -06:00
Joshua Potter
c07be8a4ce
Enderton. Finish most equivalence class exercises.
2023-07-13 13:06:48 -06:00
Joshua Potter
5991554fcb
Enderton. Exercise 3.38.
2023-07-11 16:48:46 -06:00
Joshua Potter
2199503f70
Enderton. Fixup equivalence class def'ns and additional exercises.
2023-07-11 13:15:45 -06:00
Joshua Potter
98ecc12995
Enderton. Additional equivalence relation exercises.
2023-07-10 14:47:27 -06:00
Joshua Potter
c574b481af
Enderton. Exercise 3.29.
2023-07-07 20:30:53 -06:00
Joshua Potter
04fe6c66db
Enderton. Heterogeneous relations and additional exercises.
2023-07-07 10:56:47 -06:00
Joshua Potter
1c6fec389f
Enderton. Exercises 3.19-3.23.
2023-07-06 15:31:09 -06:00
Joshua Potter
874bbe203c
Enderton. Exercise 3.19.
2023-07-06 07:31:13 -06:00
Joshua Potter
0e55484adc
Enderton. Exercises 3.16 - 3.18.
2023-07-05 17:02:43 -06:00
Joshua Potter
d3f242cf07
Enderton. Formally verify exercises 3.12 through 3.15.
2023-07-05 12:45:51 -06:00
Joshua Potter
993e9fe981
Enderton. Exercise 3.31, Theorem 3K, and corollary.
2023-07-04 16:35:21 -06:00
Joshua Potter
86abd77523
Enderton. Lean references of definitions and more exercises.
2023-07-03 15:48:28 -06:00
Joshua Potter
140195a8ee
Enderton. Add equivalence relation problem prompts.
2023-07-02 12:26:09 -06:00
Joshua Potter
8294d9583c
Enderton. Prove out most of the set function exercises.
2023-07-01 14:40:11 -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
644660d197
Enderton. Verify theorem 3I.
2023-06-26 15:11:19 -06:00
Joshua Potter
9b6af648f2
Enderton. Theorem 3H and helper theorems.
2023-06-26 13:11:55 -06:00
Joshua Potter
931e617161
Enderton. Formally verify theorem 3G.
2023-06-26 07:08:25 -06:00
Joshua Potter
a6e6251627
Enderton. Continue through theorem 3 set.
2023-06-25 07:27:35 -06:00
Joshua Potter
27372eb160
Enderton. Add additional definitions and prove Theorem 3E.
2023-06-23 15:47:55 -06:00
Joshua Potter
3d556bc613
Enderton. Finish exercises 6.
2023-06-22 14:34:50 -06:00
Joshua Potter