Theorem Ordinal.isSuccLimit_of_mem_frontier

Modification history

2025-07-11 17:39
Mathlib/SetTheory/Ordinal/Topology.lean
refactor(SetTheory/Ordinal/Arithmetic): `Ordinal.IsLimit` → `Order.IsSuccLimit` (#26643) …
Added Ordinal.isSuccLimit_of_mem_frontierView on Github →