Zobrazeno 1 - 10 of 74 pro vyhledávání: '"Andrzej Trautman"'
2
Connections and the Dirac operator on spinor bundles
Autor: Andrzej Trautman
Publikováno v: Journal of Geometry and Physics. 58:238-252
There are two approaches to spinor fields on a (pseudo-) Riemannian manifold ( M , g ) : the bundle of spinors is either defined as a bundle associated with the principal bundle of ‘spin frames’ or as a complex bundle Σ → M with a homomorphism
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0430f000c2a88997c7a0079309583e3f
https://doi.org/10.1016/j.geomphys.2007.11.001
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3
Copernicus and Modern Physics and Cosmology
Autor: Andrzej Trautman
Publikováno v: Proceedings of Indian National Science Academy, Vol 9, Iss 1 (2015)
Copernicus and Modern Physics and Cosmology
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doajarticles::b4dce4f4136adcf1d76fce3725115259
https://insa.nic.in/writereaddata/UpLoadedFiles/PINSA/Vol9_1_3_ATrautman.pdf
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4
Robinson manifolds as the Lorentzian analogs of Hermite manifolds
Autor: Andrzej Trautman, Pawel Nurowski
Publikováno v: Differential Geometry and its Applications. 17(2-3):175-195
A Lorentzian manifold is defined here as a smooth pseudo-Riemannian manifold with a metric tensor of signature ((2n +1, 1)). A Robinson manifold is a Lorentzian manifold (M) of dimension (\geqslant 4) with a subbundle (N) of the complexification of (
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8bcacd967b434ab15858ad385d806b59
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6
Robinson manifolds and Cauchy–Riemann spaces
Autor: Andrzej Trautman
Publikováno v: Classical and Quantum Gravity. 19:R1-R10
A Robinson manifold is defined as a Lorentz manifold (M, g) of dimension 2n ? 4 with a bundle N ? ? TM such that the fibres of N are maximal totally null and there holds the integrability condition [Sec N, Sec N] ? Sec N. The real part of N ? is a bu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::260f6f626efa1bb3b25e79f4422613f6
https://doi.org/10.1088/0264-9381/19/2/201
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7
[Untitled]
Autor: Marcin Bobieński, Andrzej Trautman
Publikováno v: Annals of Global Analysis and Geometry. 22:291-300
The topological condition for the existence of a pin c structure on the product of two Riemannian manifolds is derived and applied to construct examples of manifolds having the weaker Lipschitz structure, but no pin c structure. An example of a five-
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3772ca7e5706f516c0a3f08649925289
https://doi.org/10.1023/a:1019961331479
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10
[Untitled]
Autor: Andrzej Trautman, Thomas Friedrich
Publikováno v: Annals of Global Analysis and Geometry. 18:221-240
It is shown that every bundle Σ → M of complex spinormodules over the Clifford bundle Cl(g) of a Riemannian space(M, g) with local model (V, h)is associated with an lpin(‘Lipschitz’) structure on M, this being a reduction of theO(h)-bundle of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f65fbbd5c79aeb5e33f675904aa5f0e1
https://doi.org/10.1023/a:1006713405277
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