Results 1 to 10 of about 5,415 (69)

The Atiyah class of generalized holomorphic vector bundles

open access: yesDifferential Geometry and its Applications, 2023
We introduce the notion of Atiyah class of a generalized holomorphic vector bundle, which captures the obstruction to the existence of generalized holomorphic connections on the bundle. As in the classical holomorphic case, this Atiyah class can be defined in three different ways: using Čech cohomology, using the first-jet short exact sequence, or ...
Lang, Honglei, Jia, Xiao, Liu, Zhangju
openaire   +3 more sources

Cohomological Yang-Mills Theories on Kahler 3-Folds [PDF]

open access: yes, 2000
We study topological gauge theories with N=(2,0) supersymmetry based on stable bundles on general Kahler 3-folds. In order to have a theory that is well defined and well behaved, we consider a model based on an extension of the usual holomorphic bundle ...
Acharya   +36 more
core   +2 more sources

The openness conjecture and complex Brunn-Minkowski inequalities [PDF]

open access: yes, 2014
We discuss recent versions of the Brunn-Minkowski inequality in the complex setting, and use it to prove the openness conjecture of Demailly and Koll\'ar.Comment: This is an account of the results in arXiv:1305.5781 together with some background ...
B. Berndtsson   +13 more
core   +1 more source

Toric Geometry and String Theory Descriptions of Qudit Systems [PDF]

open access: yes, 2015
In this paper, we propose a new way to approach qudit systems using toric geometry and related topics including the local mirror symmetry used in the string theory compactification.
Adil Belhaj   +6 more
core   +1 more source

The Kobayashi–Hitchin Correspondence of Generalized Holomorphic Vector Bundles Over Generalized Kähler Manifolds of Symplectic Type

open access: yesInternational Mathematics Research Notices, 2023
Abstract In this paper, we establish the Kobayashi–Hitchin correspondence, that is, the equivalence of the existence of an Einstein–Hermitian metric and $\psi $-polystability of a generalized holomorphic vector bundle over a compact generalized Kähler manifold of symplectic type. Poisson modules provide intriguing generalized holomorphic
openaire   +2 more sources

Generalized Demailly–Semple jet bundles and holomorphic mappings into complex manifolds

open access: yesJournal de Mathématiques Pures et Appliquées, 2011
31 ...
Pacienza, Gianluca, Rousseau, Erwan
openaire   +3 more sources

Injectivity theorem for pseudo-effective line bundles and its applications [PDF]

open access: yes, 2017
We formulate and establish a generalization of Koll'ar's injectivity theorem for adjoint bundles twisted by a suitable multiplier ideal sheaf. As applications, we generalize Koll'ar's vanishing theorem, Koll'ar's torsion-freeness, generic vanishing ...
Fujino, Osamu, Matsumura, Shin-ichi
core   +2 more sources

Balanced Topological Field Theories [PDF]

open access: yes, 1996
We describe a class of topological field theories called ``balanced topological field theories.'' These theories are associated to moduli problems with vanishing virtual dimension and calculate the Euler character of various moduli spaces.
Dijkgraaf, R., Moore, G.
core   +3 more sources

Estimates of the number of rational mappings from a fixed variety to varieties of general type [PDF]

open access: yes, 1997
First we find effective bounds for the number of dominant rational maps $f:X \rightarrow Y$ between two fixed smooth projective varieties with ample canonical bundles. The bounds are of the type $\{A \cdot K_X^n\}^{\{B \cdot K_X^n\}^2}$, where $n=dimX$, $
Bandman, T., Dethloff, G.
core   +4 more sources

Supersymmetric quantum theory and (non-commutative) differential geometry [PDF]

open access: yes, 1996
We reconsider differential geometry from the point of view of the quantum theory of non-relativistic spinning particles, which provides examples of supersymmetric quantum mechanics.
Froehlich, J.   +2 more
core   +3 more sources

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