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Theorem sym.append_inj_left

Modification history

2022-09-15 01:42
src/data/sym/basic.lean
feat(data/sym/basic): add `fill_mem`, `append_mem` and supporting lemmas (#16486) …
Modified sym.append_inj_leftView on Github →
2022-09-13 10:49
src/data/sym/basic.lean
feat(data/sym/basic): add `fill` `filter_ne` and `sigma_ext` (#16316) …
Added sym.append_inj_leftView on Github →