fact: Definition Book_5_3_es_ne_es' : ~(es = es') := fun H => false_ne_true (ap10 (ap10 H 0) false).
imports: HoTT(Basics Types HProp HSet Projective TruncType Truncations Modalities.Notnot Modalities.Open Modalities.Closed BoundedSearch Equiv.BiInv Spaces.Nat Spaces.Torus.TorusEquivCircles Metatheory.Core Metatheory.FunextVarieties)