Bordism of spin manifolds with local actions of Tori in low dimensions
Piotr Mikrut (1997)
Colloquium Mathematicae
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Piotr Mikrut (1997)
Colloquium Mathematicae
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Goldberg, Timothy E. (2010)
SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
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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.
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.
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.
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.
Gîrţu, Manuela, Gîrţu, Valentin (2008)
Acta Mathematica Academiae Paedagogicae Nyí regyháziensis. New Series [electronic only]
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Brajerčík, Ján (2010)
Balkan Journal of Geometry and its Applications (BJGA)
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Włodzimierz Jelonek (2000)
Annales Polonici Mathematici
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The aim of this paper is to give an easy explicit description of 3-K-contact structures on certain SO(3)-principal fibre bundles over quaternionic-Kähler manifolds.