Theorems · Definition · combinatorics

Multiset.attach

{α : Type u_1} → (s : Multiset α) → Multiset { x // x ∈ s }

"Attach" a proof that a ∈ s to each element a in s to produce a multiset on {x // x ∈ s}.

Defined in

Mathlib.Data.Multiset.Defs

Cited by

31 results in Mathlib

Foundations

Depth 18 from the axioms · uses propext, Quot.sound