Mathlib v3 is deprecated. Go to Mathlib v4

Commit 2019-03-05 09:21 146d73c6

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feat(data/set): add finite_image_iff_on

Estimated changes

Modified src/data/set/finite.lean

added theorem set.finite_image_iff_on

modified theorem set.finite_of_finite_image

added theorem set.finite_of_finite_image_on