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In this note we give a complete description of all the hyperplane section of the projective bundle associated to the tangent bundle of $\mathbb{P}^2$ under its natural embedding in $\mathbb{P}^7.$ As an application one obtains a description…

Algebraic Geometry · Mathematics 2021-03-23 A. El Mazouni , D. S. Nagaraj

In this paper, we define a new conformal invariant on complete non-compact hyperbolic surfaces that can be conformally compactified to bounded domains in $\mathbb{C}$. We study and compute this invariant up to one-connected surfaces. Our…

Differential Geometry · Mathematics 2025-01-01 Jinyang Wu

The present article presents geometric quantization on cotangent bundles as a special instance of Kirillov's orbit method. To this end, the cotangent bundle is realized as a coadjoint orbit of an infinite-dimensional Lie group constructed…

Symplectic Geometry · Mathematics 2025-06-13 Michael Gjertsen , Alexander Schmeding

In this article we study modules over wild canonical algebras which correspond to extension bundles [9] over weighted projective lines. We prove that all modules attached to extension bundles can be established by matrices with coefficients…

Rings and Algebras · Mathematics 2021-04-12 Dawid Kędzierski , Hagen Meltzer

In this paper we give explicit, handle-by-handle constructions of concave symplectic fillings of all closed, oriented contact 3-manifolds. These constructions combine recent results of Giroux relating contact structures and open book…

Geometric Topology · Mathematics 2009-11-07 David T. Gay

We show that the resolution graph of a plane curve singularity admits a canonical decomposition into elementary graphs.

Algebraic Geometry · Mathematics 2014-09-16 Joao Cabral , Orlando Neto , Pedro C. Silva

A new canonical transformation is found that enables the direct canonical treatment of the conformal factor in general relativity. The resulting formulation significantly simplifies the previously presented conformal geometrodynamics. It…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Charles H. -T. Wang

We investigate orthogonal and symplectic bundles with parabolic structure, over a curve.

Algebraic Geometry · Mathematics 2012-03-30 Indranil Biswas , Souradeep Majumder , Michael Lennox Wong

Given two open books with equal pages we show the existence of an exact symplectic cobordism whose negative end equals the disjoint union of the contact manifolds associated to the given open books, and whose positive end induces the…

Geometric Topology · Mathematics 2014-12-10 Mirko Klukas

We study smooth projective complex varieties with ample cotangent bundle. Our main result is that in an abelian variety of dimension n, a complete intersection of at least n/2 general hypersurfaces of sufficiently high degrees has ample…

Algebraic Geometry · Mathematics 2011-09-08 O. Debarre

We extend the so called Chen-Jiang decomposition for pushforward of pluricanocanical bundles to abelian varieties to the setting of klt pairs. We also provide a geometric application of this decomposition.

Algebraic Geometry · Mathematics 2020-12-10 Zhi Jiang

We use convex decomposition theory to (1) reprove the existence of a universally tight contact structure on every irreducible 3-manifold with nonempty boundary, and (2) prove that every toroidal 3-manifold carries infinitely many…

Geometric Topology · Mathematics 2007-05-23 Ko Honda , William H. Kazez , Gordana Matic

For compact and for convex co-compact oriented hyperbolic surfaces, we prove an explicit correspondence between classical Ruelle resonant states and quantum resonant states, except at negative integers where the correspondence involves…

Dynamical Systems · Mathematics 2017-08-01 Colin Guillarmou , Joachim Hilgert , Tobias Weich

We introduce a class of first order G-structures, each of which has an underlying almost conformally symplectic structure. There is one such structure for each real simple Lie algebra which is not of type $C_n$ and admits a contact grading.…

Differential Geometry · Mathematics 2018-07-02 Andreas Cap , Tomas Salac

Unit tangent bundles $UM$ of semi-Riemannian manifolds $M$ are shown to be examples of dynamical Legendrian contact structures, which were defined in recent work [25] of Sykes-Zelenko to generalize leaf spaces of 2-nondegenerate CR…

Differential Geometry · Mathematics 2021-02-25 Curtis Porter

We classify locally the contact metric (k,mu)-spaces whose Boeckx invariant is $\le -1$ as tangent hyperquadric bundles of Lorentzian space forms.

Differential Geometry · Mathematics 2016-07-15 E. Loiudice , A. Lotta

A complex contact threefold is a threefold with a two-dimensional non-integrable holomorphic distribution. A contact curve on a contact threefold is an integrable curve of the distribution. This work was inspired by two papers of Bryant, in…

alg-geom · Mathematics 2008-02-03 Yun-Gang Ye

Generalising a classical theorem by Ueno, we prove structure results for manifolds with nef or semiample cotangent bundle.

Algebraic Geometry · Mathematics 2017-11-07 Andreas Höring

We show that the nefness of the canonical bundle of compact K\"ahler threefolds is invariant under deformed symplectic diffeomorphisms.

Algebraic Geometry · Mathematics 2015-12-22 Hsueh-Yung Lin

In this paper we study the cohomology of tensor products of symmetric powers of the cotangent bundle of complete intersection varieties in projective space. We provide an explicit description of some of those cohomology groups in terms of…

Algebraic Geometry · Mathematics 2014-07-01 Damian Brotbek
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