Fin.card_filter_univ_succ

∀ {n : ℕ} (p : Fin (n + 1) → Prop) [inst : DecidablePred p],
  {x | p x}.card = if p 0 then {x | p x.succ}.card + 1 else {x | p x.succ}.card

Defined in: Mathlib.Data.Fintype.Fin
Cited by: 1 results in Mathlib
Foundations: Depth 80 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: DecidablePred

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