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We give examples of generalized complex four-manifolds whose moduli space has infinitely many components.

Differential Geometry · Mathematics 2013-10-28 Gil R. Cavalcanti

For a connected Lie group G, we show that a complex structure on the total space TG of the tangent bundle of G that is left invariant and has the property that each left translation G-orbit is a totally real submanifold is induced from a…

Differential Geometry · Mathematics 2013-07-02 Johannes Huebschmann , Karl Leicht

After introducing some motivations for this survey, we describe a formalism to parametrize a wide class of algebraic structures occurring naturally in various problems of topology, geometry and mathematical physics. This allows us to define…

Algebraic Topology · Mathematics 2016-12-16 Sinan Yalin

Let M and N be even-dimensional oriented real manifolds, and $u:M \to N$ be a smooth mapping. A pair of complex structures at M and N is called u-compatible if the mapping u is holomorphic with respect to these structures. The quotient of…

Differential Geometry · Mathematics 2007-05-23 Yurii M. Burman

Following an earlier paper on the differential-geometric structure of the moduli space of special Lagrangian submanifolds in a Calabi-Yau manifold, we follow an analogous approach for compact complex Lagrangian submanifolds of a…

Differential Geometry · Mathematics 2007-05-23 N J Hitchin

We study generalized complex cohomologies of generalized complex structures constructed from certain symplectic fibre bundles over complex manifolds. We apply our results in the case of left-invariant generalized complex structures on…

Differential Geometry · Mathematics 2017-12-12 Daniele Angella , Simone Calamai , Hisashi Kasuya

We present a systematic study of involutions on the moduli space of $G$-Higgs bundles over an elliptic curve $X$, where $G$ is complex reductive affine algebraic group. The fixed point loci in the moduli space of $G$-Higgs bundles on $X$,…

Algebraic Geometry · Mathematics 2016-12-28 Indranil Biswas , Luis Angel Calvo , Emilio Franco , Oscar García-Prada

We describe a geometric compactification of the moduli stack of left invariant complex structures on a fixed real Lie group or a fixed quotient. The extra points are CR structures transverse to a real foliation.

Differential Geometry · Mathematics 2024-08-30 Laurent Meersseman

We give a characterizaton of smooth ample Hypersurfaces in Abelian Varieties and also describe an irreducible connected component of their moduli space: it consists of the Hypersurfaces of a given polarization type, plus the iterated…

Algebraic Geometry · Mathematics 2020-02-05 Fabrizio Catanese , Yongnam Lee

Spinorial methods have proven to be a powerful tool to study geometric properties of spin manifolds. Our aim is to continue the spinorial study of manifolds that are not necessarily spin. We introduce and study the notion of $G$-invariance…

Differential Geometry · Mathematics 2025-09-15 Diego Artacho , Marie-Amélie Lawn

In the paper we continue to study Special Bohr-Sommerfeld geometry of compact symplectic manifolds. Using natural deformation parameters we avoid the difficulties appeared in the definition of the moduli space of Special Bohr-Sommerfeld…

Symplectic Geometry · Mathematics 2024-06-25 Nikolay A. Tyurin

In this paper we construct certain moduli spaces, which we call moduli spaces of (principal) $F$-bundles, and study their basic properties. These spaces are associated to triples consisting of a smooth projective geometrically connected…

Algebraic Geometry · Mathematics 2007-05-23 Yakov Varshavsky

We construct the space of infinitesimal variations for the Strominger system and an obstruction space to integrability, using elliptic operator theory. We initiate the study of the geometry of the moduli space, describing the infinitesimal…

Differential Geometry · Mathematics 2019-07-25 Mario Garcia-Fernandez , Roberto Rubio , Carl Tipler

We construct moduli spaces of complex affine and dilation surfaces. Using ideas of Veech, we show that the the moduli space of affine surfaces with fixed genus and with cone points of fixed complex order is a holomorphic affine bundle over…

Geometric Topology · Mathematics 2022-04-12 Paul Apisa , Matt Bainbridge , Jane Wang

In an earlier paper by Kazhdan and the author, a map from the set of unipotent classes in a reductive connected group over C to the conjugacy classes in the Weyl group was defined. Here we present some experimental evidence for a possibly…

Representation Theory · Mathematics 2009-07-24 G. Lusztig

In [arXiv:2008.04625] the authors constructed a classifying space for polystable holomorphic vector bundles on a compact K\"ahler manifold using analytic GIT theory. The aim of this article is to show that this classifying space taken in…

Algebraic Geometry · Mathematics 2022-03-02 Nicholas Buchdahl , Georg Schumacher

The moduli space of regular stable maps with values in a complex manifold admits naturally the structure of a complex orbifold. Our proof uses the methods of differential geometry rather than algebraic geometry. It is based on Hardy…

Symplectic Geometry · Mathematics 2012-05-09 Joel Robbin , Yongbin Ruan , Dietmar Salamon

We construct the deformation functor associated to a couple of morphisms of differential graded Lie algebras, and use it to study the infinitesimal deformations of a holomorphic map of compact complex manifolds. In particular, in the case…

Algebraic Geometry · Mathematics 2007-05-23 Donatella Iacono

In this work a thorough study of a number of specific supersymmetric sigma-models with extended supersymmetry is performed within the context of generalised complex geometry. More specifically the supersymmetric Wess-Zumino-Witten model on…

High Energy Physics - Theory · Physics 2013-01-04 Dimitri Terryn

We define convex projective structures on 2D surfaces with holes and investigate their moduli space. We prove that this moduli space is canonically identified with the higher Teichmuller space for the group PSL_3 defined in our paper…

Differential Geometry · Mathematics 2007-05-23 V. V. Fock , A. B. Goncharov