Mathlib Changelog
v4
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2024-10-11 09:39
e4fa33c4
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feat:
Finsupp.mapRange
of a surjective function is surjective (
#17637
) From PFR
Estimated changes
Modified
Mathlib/Data/Finsupp/Defs.lean
added
theorem
Finsupp.mapRange_mapRange
added
theorem
Finsupp.mapRange_surjective