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Finset.card_sdiff_le_card_sdiff_iff
Modification history
2025-06-07 13:26
Mathlib/Data/Finset/Card.lean
feat(Finset/Card): relate cardinality of `s \ t` with `t \ s` (#25554) …
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Finset.card_sdiff_le_card_sdiff_iff
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