Theorem Finset.prod_preimage_of_bij

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_of_bijView on Github →
2023-01-21 16:19
Mathlib/Data/Finset/Preimage.lean
feat: port Data.Finset.Preimage (#1746)
Added Finset.prod_preimage_of_bijView on Github →