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- W4241472304 abstract "Abstract For a class of Serre fibrations with a weak formal base X (or with a degenerated A ∞ -algebra structure on the integral cohomology H *( X )), obstructions are defined by means of spherical twisting cochains of ξ . In particular, for a given section s n : X n → E on n -skeleton of X , the problem of avoiding the ( n +1)th obstruction o ( s n ) ∈ H n +1 ( X ; π n ( F )) to the existence of a section on X n +1 reduces to solving a system of linear equations with respect to cohomology elements of the groups H i ( X ; π i ( F )), i < n . Homotopy classification theorems for sections as well as for weak formal maps are given, too." @default.
- W4241472304 created "2022-05-12" @default.
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- W4241472304 date "1997-04-01" @default.
- W4241472304 modified "2023-09-28" @default.
- W4241472304 title "Obstructions to the Section Problem in a Fibration with a Weak Formal Base" @default.
- W4241472304 doi "https://doi.org/10.1515/gmj.1997.149" @default.
- W4241472304 hasPublicationYear "1997" @default.
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