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Theorems · Definition · combinatorics

Finset.HasAntidiagonal.antidiagonal

{A : Type u_1} → {inst : AddMonoid A} → [self : Finset.HasAntidiagonal A] → A → Finset (A × A)

The antidiagonal of an element n is the finset of pairs (i, j) such that i + j = n.

Defined in
Mathlib.Algebra.Order.Antidiag.Prod
Cited by
218 results in Mathlib
Foundations
Depth 2 from the axioms, rests on 5 definitions · uses no axioms
Assumes
Finset.HasAntidiagonal

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