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Displaying 2461 –
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On sait, depuis des travaux de Burde et de Rham, que l’étude des représentations du groupe d’un nœud dans le groupe des matrices triangulaires supérieures inversibles d’ordre permet de détecter les racines du polynôme d’Alexander du nœud. Dans ce travail, nous nous proposons de généraliser ce résultat et ce en considérant les représentations du groupe du nœud dans le groupe des matrices triangulaires supérieures inversibles d’ordre . Cette approche nous permettra de retrouver la décomposition...
Let G be a finite loop space such that the mod p cohomology of the classifying space BG is a polynomial algebra. We consider when the adjoint bundle associated with a G-bundle over M splits on mod p cohomology as an algebra. In the case p = 2, an obstruction for the adjoint bundle to admit such a splitting is found in the Hochschild homology concerning the mod 2 cohomologies of BG and M via a module derivation. Moreover the derivation tells us that the splitting is not compatible with the Steenrod...
We describe explicitly the moduli spaces of polystable holomorphic structures with on a rank two vector bundle with and for all minimal class VII surfaces with and with respect to all possible Gauduchon metrics . These surfaces are non-elliptic and non-Kähler complex surfaces and have recently been completely classified. When is a half or parabolic Inoue surface, is always a compact one-dimensional complex disc. When is an Enoki surface, one obtains a complex disc with finitely...
We extend the construction of moment-angle complexes to simplicial posets by associating a certain T m-space Z S to an arbitrary simplicial poset S on m vertices. Face rings ℤ[S] of simplicial posets generalise those of simplicial complexes, and give rise to new classes of Gorenstein and Cohen-Macaulay rings. Our primary motivation is to study the face rings ℤ[S] by topological methods. The space Z S has many important topological properties of the original moment-angle complex Z K associated to...
In this paper we study sets of some special monomials which form bases for the mod- Steenrod algebra .
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