Mathlib Changelog
v4
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Commit
2025-12-15 18:48
0e1aacf8
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feat:
SetRel.(pre)image
of
iUnion
and
sUnion
(
#32847
)
Estimated changes
Modified
Mathlib/Data/Rel.lean
added
theorem
SetRel.image_iUnion
added
theorem
SetRel.image_sUnion
added
theorem
SetRel.preimage_iUnion
added
theorem
SetRel.preimage_sUnion