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Commit 2022-09-06 02:53 58903102

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feat(src/data/*): lemmas about emptiness for finset/multiset/vector coercions (#16113) Adds basic lemmas about whether the result of to_list is empty for various data structures.

Estimated changes

modified theorem finset.coe_to_list
added theorem finset.empty_to_list
modified theorem finset.mem_to_list
modified theorem finset.to_list_empty
added theorem finset.to_list_eq_nil
modified theorem multiset.coe_to_list
added theorem multiset.empty_to_list
modified theorem multiset.mem_to_list
modified theorem multiset.to_list_zero
added theorem vector.to_list_empty
modified theorem vector.not_mem_zero