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Commit 2020-06-05 05:31 2131382b

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feat(data/setoid/partition): some lemmas about partitions (#2937)

Estimated changes

Modified src/data/setoid/partition.lean

added theorem setoid.is_partition.pairwise_disjoint

added theorem setoid.is_partition.sUnion_eq_univ

added theorem setoid.is_partition_classes