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Theorem initial_seg.eq_or_principal

Modification history

2022-07-17 15:25
src/order/initial_seg.lean
chore(order/initial_seg): move definitions of initial and principal segments (#15328) …
Modified initial_seg.eq_or_principalView on Github →
2020-05-27 21:30
src/set_theory/ordinal.lean
refactor(*iterate*): move to `function`; renamings (#2832) …
Modified initial_seg.eq_or_principalView on Github →
2017-12-10 08:36
data/ordinal.lean
feat(data/ordinal): ordinal numbers
Added initial_seg.eq_or_principalView on Github →