Commit Graph

24 Commits (03f51f30970ef08edf6f6aa36f9f3f413bf8dabf)

Author SHA1 Message Date
Joshua Potter 7fe780e72f Drop `Common.Set.Interval` and `Common.Set.Partition`. 2023-07-25 07:28:20 -06:00
Joshua Potter db6074f1a1 Enderton. Peano postulate theorem/exercise drafts. 2023-07-23 12:13:24 -06:00
Joshua Potter f328440797 Enderton. Peano systems. 2023-07-21 14:25:36 -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 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 8b5736397c Enderton. Break out relations/ordered pairs. Exercise 6.7. 2023-06-20 15:02:09 -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 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 8279131d74 Enderton, basic axioms/unions exercises. 2023-05-21 18:32:59 -06:00
Joshua Potter c0f8895686 Derive a more constructive `StepFunction` definition. 2023-05-15 13:37:01 -06:00
Joshua Potter 96dd9b5669 Revise geometry with different types of rectangles and lines. 2023-05-15 06:40:35 -06:00
Joshua Potter 3fc293579d Add concept of glossary. 2023-05-12 19:31:44 -06:00
Joshua Potter f5dfb9ff6b Generalize concept of partitions and step functions. 2023-05-12 13:17:34 -06:00
Joshua Potter 56751a6f3b Use a consistent naming convention. 2023-05-12 11:08:52 -06:00
Joshua Potter 60724c0b52 Generalize set functions and move partitions in anticipation
of Apostol 1.11 exercise 8.
2023-05-12 07:05:31 -06:00