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Theorem list.mem_of_mem_head'

Modification history

2022-09-26 05:32
src/data/list/basic.lean
feat(data/list/basic): `list.head`, `list.head'`, and `list.tail` are surjective (#16625) …
Modified list.mem_of_mem_head'View on Github →
2020-05-12 01:24
src/data/list/basic.lean
feat(data/list): assorted lemmas (#2651) …
Added list.mem_of_mem_head'View on Github →