Nkebi ahịrịokwu 1: Nke a na-agwa anyị na de-Rham cohomology ìgwè usoro _ 4 niile bụ isomorphic. Nkebi ahịrịokwu 2: Nke a na-agwa anyị na DeRham - Cohomology Groups - Formula 4 niile bụ isomorphic. Ajụjụ: Ọ̀ bụ otu ihe ka ahịrịokwu nke mbụ na nke abụọ pụtara? Ee ma ọ bụ Ee e?
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