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
857d0ea83e
Enderton (Set). Additions to exercise set 6. ( #8 )
2023-11-10 10:02:25 -07:00
Joshua Potter
7e1eb8fdfb
Require simp to make progress.
2023-09-08 18:50:44 -06:00
Joshua Potter
a00a5f5523
Enderton (set). Work through backlog of theorems and exercises.
2023-08-26 18:41:33 -06:00
Joshua Potter
f990a7a30a
Enderton. Reorder theorems in Lean modules and add set/logic prompts.
2023-08-17 18:04:20 -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
83699dd58e
Enderton. Continue actually verifying set theorems.
2023-08-09 15:44:40 -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
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
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.
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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
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
8b5736397c
Enderton. Break out relations/ordered pairs. Exercise 6.7.
2023-06-20 15:02:09 -06:00
Joshua Potter
738435e299
Add prompts for upcoming theorems/exercises.
2023-06-16 08:16:33 -06:00
Joshua Potter
2abd4b6b25
Enderton. Finishe exercise set 5. Prep for exercise set 6.
2023-06-15 15:31:58 -06:00
Joshua Potter
f5d1fc546a
Enderton. Move Kuratowski's definition of an ordered pair into chapter; not
...
likely to be used outside this book.
2023-06-10 16:02:22 -06:00
Joshua Potter
6d3a2d8ad0
Fix build errors in `Chapter_2.lean`.
2023-06-10 12:09:24 -06:00
Joshua Potter
64d8324657
Enderton. Finish exercises 5 in LaTeX.
2023-06-10 05:51:42 -06:00
Joshua Potter
ad3e31764b
Enderton. Exercise 5.(1|2a|2b).
2023-06-09 21:03:06 -06:00
Joshua Potter
7559664d56
Enderton. Ordered pairs.
2023-06-08 17:57:02 -06:00
Joshua Potter
49bd4871fe
Enderton. Theorem 3A.
2023-06-06 20:16:06 -06:00
Joshua Potter