Ordinal.bfamilyOfFamily

Deprecated since 2026-04-06Use Ordinal.enum instead.

{α : Type u_1} → {ι : Type u} → (ι → α) → (a : Ordinal.{u}) → a < Ordinal.type WellOrderingRel → α

Converts a family indexed by a Type u to one indexed by an Ordinal.{u} using a well-ordering given by the axiom of choice.

Defined in: Mathlib.SetTheory.Ordinal.Family
Cited by: 7 results in Mathlib
Foundations: Depth 76 from the axioms · uses propext, Classical.choice, Quot.sound

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