fact: Definition nsep_plus (n : trunc_index) (X : Type) `{In (nSep n.+1 (Meet L O)) X} : In (nSep n (Meet L O)) (Plus L O X).
imports: HoTT.Basics HoTT.Types Extensions HFiber Truncations NullHomotopy Limits.Pullback Descent Lex Separated