Joshua Potter 66ca483671 Enderton (set). Isomorphism from ℕ to peano systems.		2023-09-09 05:15:52 -06:00
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Basic.lean	Enderton (set). Continue refining ordering theorems/exercises.	2023-08-11 18:58:36 -06:00
Peano.lean	Enderton (set). Isomorphism from ℕ to peano systems.	2023-09-09 05:15:52 -06:00