Ordinal.eq_zero_or_opow_omega0_le_of_mul_eq_right

∀ {a b : Ordinal.{u_1}}, a * b = b → b = 0 ∨ a ^ Ordinal.omega0 ≤ b

Defined in: Mathlib.SetTheory.Ordinal.FixedPoint
Cited by: 1 results in Mathlib
Foundations: Depth 98 from the axioms · uses propext, Classical.choice, Quot.sound

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