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Commit 2022-09-28 21:58 0abedaf8

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feat(data/nat/parity): iterations of involutive functions (#16630)

Estimated changes

Modified src/data/bool/basic.lean

added theorem bool.bnot_ne_id

Modified src/data/nat/parity.lean

added theorem function.involutive.iterate_bit0

added theorem function.involutive.iterate_bit1

added theorem function.involutive.iterate_eq_id

added theorem function.involutive.iterate_eq_self

added theorem function.involutive.iterate_even

added theorem function.involutive.iterate_odd

Modified src/logic/function/basic.lean

added theorem bool.involutive_bnot