Displaying similar documents to “Bordism of oriented 5-manifolds with T-structure and polarization”

Various structures in 8-dimensional vector bundles over 8-manifolds

Martin Čadek, Jiří Vanžura (1998)

Banach Center Publications

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The paper is an overview of our results concerning the existence of various structures, especially complex and quaternionic, in 8-dimensional vector bundles over closed connected smooth 8-manifolds.

K-contact A-manifolds

WŁodzimierz Jelonek (1998)

Colloquium Mathematicae

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The aim of this paper is to give a characterization of regular K-contact A-manifolds.

Open books on contact five-manifolds

Otto van Koert (2008)

Annales de l’institut Fourier

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By using open book techniques we give an alternative proof of a theorem about the existence of contact structures on five-manifolds due to Geiges. The theorem asserts that simply-connected five-manifolds admit a contact structure in every homotopy class of almost contact structures.

The positive mass theorem for ALE manifolds

Mattias Dahl (1997)

Banach Center Publications

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We show what extra condition is necessary to be able to use the positive mass argument of Witten [12] on an asymptotically locally euclidean manifold. Specifically we show that the 'generalized positive action conjecture' holds if one assumes that the signature of the manifold has the correct value.