Formal differential graded algebras and homomorphisms

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Abstract

Let B be a differential graded algebra over the rationals (DGA), M a minimal DGA, [M,B] the homotopy classes of DGA maps M→B, and I:[M,B]→Hom(H*(M), H*(B)) the function which assigns the induced cohomology homomorphism to a homotopy class. Theorem. If M and B are formal, then I restricted to the homotopy classes of formal maps is a bijection. This theorem has several diverse consequences including results on the group of homotopy classes of homotopy equivalences of a formal DGA and results on the suspension Σ:[X,Y]→[ΣX,ΣY]co-H when X and Y are formal spaces. © 1988.

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APA

Arkowitz, M. (1988). Formal differential graded algebras and homomorphisms. Journal of Pure and Applied Algebra, 51(1–2), 35–52. https://doi.org/10.1016/0022-4049(88)90076-X

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