Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Raźny, Paweł"'
Autor:
Raźny, Paweł, Sheshko, Nikolay
In this article we study covering spaces of symplectic toric orbifolds and symplectic toric orbifold bundles. In particular, we show that all symplectic toric orbifold coverings are quotients of some symplectic toric orbifold by a finite subgroup of
Externí odkaz:
http://arxiv.org/abs/2405.11994
Autor:
Raźny, Paweł
We present a spectral sequence for free isometric Lie algebra actions (and consequently locally free isometric Lie group actions) which relates the de Rham cohomology of the manifold with the Lie algebra cohomology and basic cohomology (intuitively t
Externí odkaz:
http://arxiv.org/abs/2308.11500
Autor:
Raźny, Paweł
We introduce a new spectral sequence for the study of $\mathcal{K}$-manifolds which arises by restricting the spectral sequence of a Riemannian foliation to forms invariant under the flows of $\{\xi_1,...,\xi_s\}$. We use this sequence to generalize
Externí odkaz:
http://arxiv.org/abs/2207.04112
Autor:
Pełka, Tomasz, Raźny, Paweł
Publikováno v:
Pacific J. Math. 311 (2021) 385-422
We give a corrected statement of the theorem of Gurjar and Miyanishi, which classifies smooth affine surfaces of Kodaira dimension zero, whose coordinate ring is factorial and has trivial units. Denote the class of such surfaces by $\mathcal{S}_{0}$.
Externí odkaz:
http://arxiv.org/abs/2002.10995
Autor:
Raźny, Paweł
We show that the Hodge numbers of Sasakian manifolds are invariant under arbitrary deformations of the Sasakian structure. We also present an upper semi continuity Theorem for the dimensions of kernels of a smooth family of transversely elliptic oper
Externí odkaz:
http://arxiv.org/abs/1908.11107
Autor:
Horecka, Michalina, Raźny, Paweł
We present a criterion for the existence of periodic points based on the eigenvalues of maps induced in cohomology for spaces with rational cohomology isomorphic to a tensor product of a graded exterior algebra with generators in odd dimensions and a
Externí odkaz:
http://arxiv.org/abs/1908.11109
Autor:
Raźny, Paweł
Publikováno v:
SIGMA 14 (2018), 070, 11 pages
In the following paper we investigate the question: when is a transitive topological groupoid continuously isomorphic to a Lie groupoid? We present many results on the matter which may be considered generalizations of the Hilbert's fifth problem to t
Externí odkaz:
http://arxiv.org/abs/1805.03066
Autor:
Raźny, Paweł
Publikováno v:
SIGMA 13 (2017), 098, 10 pages
In the following paper we investigate the question: when is a transitive topological groupoid continuously isomorphic to a Lie groupoid? We present many results on the matter which may be considered generalizations of the Hilbert's fifth problem to t
Externí odkaz:
http://arxiv.org/abs/1710.11440
Autor:
Czarnecki, Andrzej, Raźny, Paweł
We present examples of foliations with infinite dimensional basic symplectic and com- plex cohomologies, along with a general sufficient condition for such phenomena. This puts re- strictions on possible generalizations of several finiteness results
Externí odkaz:
http://arxiv.org/abs/1705.02216
Autor:
Razny, Pawel
The purpose of this short paper is to further develop the theory of transverse generalized complex structures. We focus on proving some equivalent conditions to the basic $dd^{\mathcal{J}}$ -lemma. We justify our approach by describing the transverse
Externí odkaz:
http://arxiv.org/abs/1609.04539