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v4
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Theorem
Finset.prod_preimage'
Modification history
2024-03-25 07:55
Mathlib/Algebra/BigOperators/Basic.lean
chore: Make `Finset.preimage` not depend on `Finset.sum` (#11601) …
Modified
Finset.prod_preimage'
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2023-01-21 16:19
Mathlib/Data/Finset/Preimage.lean
feat: port Data.Finset.Preimage (#1746)
Added
Finset.prod_preimage'
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