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Commit 2022-04-19 10:05 5a4bae11

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feat(algebra/*/basic): add trivial lemmas (#13416) These save you from having to fiddle with mul_one when you want to rewrite them the other way, or allow easier commutativity rewrites.

Estimated changes

added theorem add_one_mul
added theorem mul_add_one
added theorem mul_one_add
added theorem mul_one_sub
added theorem mul_sub_one
added theorem one_add_mul
added theorem one_sub_mul
added theorem sub_one_mul