Finmap.keys_erase_toFinset

∀ {α : Type u} {β : α → Type v} [inst : DecidableEq α] (a : α) (s : AList β),
  (AList.erase a s).toFinmap.keys = s.toFinmap.keys.erase a

Defined in: Mathlib.Data.Finmap
Cited by: 1 results in Mathlib
Foundations: Depth 28 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: DecidableEq

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