Commit 2023-01-18 23:31 161281ab

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feat port: Data.Set.Pointwise.BigOperators (#1651)

Estimated changes

Modified Mathlib.lean

Created Mathlib/Data/Set/Pointwise/BigOperators.lean

added theorem Set.finset_prod_mem_finset_prod

added theorem Set.finset_prod_singleton

added theorem Set.finset_prod_subset_finset_prod

added theorem Set.list_prod_mem_list_prod

added theorem Set.list_prod_singleton

added theorem Set.list_prod_subset_list_prod

added theorem Set.mem_finset_prod

added theorem Set.mem_fintype_prod

added theorem Set.multiset_prod_mem_multiset_prod

added theorem Set.multiset_prod_singleton

added theorem Set.multiset_prod_subset_multiset_prod