mathlib
7b7fea55 - refactor(set_theory/cardinal_ordinal): `aleph_is_principal_aleph` → `principal_add_aleph` (#12663)

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3 years ago
refactor(set_theory/cardinal_ordinal): `aleph_is_principal_aleph` → `principal_add_aleph` (#12663) This matches the naming scheme used throughout `set_theory/principal.lean`.
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