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Theorem set.image_subset_iff_subset_preimage

Modification history

2017-10-15 02:26
data/set/basic.lean
Merge remote-tracking branch 'minchaowu/master'
Deleted set.image_subset_iff_subset_preimageView on Github →
2017-08-02 22:32
data/set/basic.lean
refactor(data/set/basic,*): vimage -> preimage, add notation
Added set.image_subset_iff_subset_preimageView on Github →