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Theorem ordinal.principal_mul_iff_le_two_or_omega_opow_opow

Modification history

2022-03-29 07:35
src/set_theory/principal.lean
feat(set_theory/ordinal_arithmetic): Characterize principal multiplicative ordinals (#11701) …
Added ordinal.principal_mul_iff_le_two_or_omega_opow_opowView on Github →