Theorems · Theorem · order theory

IncidenceAlgebra.lambda_apply

∀ (𝕜 : Type u_2) {α : Type u_5} [inst : Zero 𝕜] [inst_1 : One 𝕜] [inst_2 : Preorder α]
  [inst_3 : DecidableRel fun x1 x2 => x1 ⩿ x2] (a b : α), (IncidenceAlgebra.lambda 𝕜) a b = if a ⩿ b then 1 else 0

Defined in

Mathlib.Combinatorics.Enumerative.IncidenceAlgebra

Cited by

0 results in Mathlib

Foundations

Depth 9 from the axioms · uses no axioms

Assumes

ZeroOnePreorderDecidableRel