Nkebi ahịrịokwu 1: Nke a pụtara na homotopic equivalence n'etiti M, W na N bụ homotopy nke C-isomorphism. Nkebi ahịrịokwu 2: Nke a pụtara na homotopy equivalence n'etiti M, W, na N bụ homotopic ka a C-isomorphism. Ajụjụ: Ọ̀ bụ otu ihe ka ahịrịokwu nke mbụ na nke abụọ pụtara? Ee ma ọ bụ Ee e?
Ee e