Theorems · Theorem · combinatorics
List.foldl_flip_eq_foldr
∀ {α : Type u_1} {β : Type u_2} {l : List α} {f : α → β → β} {b : β} [LeftCommutative f],
List.foldl (flip f) b l = List.foldr f b lSecond Bird–Wadler duality theorem.
- Defined in
- Mathlib.Data.List.Fold
- Cited by
- 0 results in Mathlib
- Foundations
- Depth 9 from the axioms · uses propext
- Assumes
- LeftCommutative
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- LeftCommutativestatement and proof · cited by 20
- List.foldr_cons_eq_foldr_applyproof · cited by 2
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