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Commit 2022-05-12 10:27 59273305

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refactor(combinatorics/simple_graph/basic): relax edge_finset typeclasses (#14091)

Estimated changes

Modified src/combinatorics/simple_graph/basic.lean

modified def simple_graph.edge_finset

added theorem simple_graph.edge_finset_card

modified theorem simple_graph.edge_set_univ_card

modified theorem simple_graph.mem_edge_finset