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We introduce a method to resolve a symplectic orbifold into a smooth symplectic manifold. Then we study how the formality and the Lefschetz property of the symplectic resolution are compared with that of the symplectic orbifold. We also…

Symplectic Geometry · Mathematics 2008-04-09 Gil Cavalcanti , Marisa Fernandez , Vicente Munoz

We consider the Swift-Hohenberg equation on manifolds with conical singularities and show existence, uniqueness and maximal regularity of the short time solution in terms of Mellin-Sobolev spaces. Moreover, we give a necessary and…

Analysis of PDEs · Mathematics 2019-11-28 Nikolaos Roidos

We study local rigidity and multiplicity of constant scalar curvature metrics in arbitrary products of compact manifolds. Using (equivariant) bifurcation theory we determine the existence of infinitely many metrics that are accumulation…

Differential Geometry · Mathematics 2011-10-19 L. L. de Lima , P. Piccione , M. Zedda

We review the current state of the art concerning the characterization of traces of the spaces $W^{1, p} (\mathbb{B}^{m-1}\times (0,1), \mathcal{N})$ of Sobolev mappings with values into a compact manifold $\mathcal{N}$. In particular, we…

Analysis of PDEs · Mathematics 2021-07-16 Petru Mironescu , Jean Van Schaftingen

We extend our investigations on $\mathfrak g$-invariant Fedosov star products and quantum momentum mappings \cite{MN03a} to star products of Wick type on pseudo-K\"ahler manifolds. Star products of Wick type can be completely characterized…

Quantum Algebra · Mathematics 2007-05-23 Michael F. Mueller-Bahns , Nikolai Neumaier

In this paper, we consider a general discrete-time spectral factorization problem for rational matrix-valued functions. We build on a recent result establishing existence of a spectral factor whose zeroes and poles lie in any pair of…

Optimization and Control · Mathematics 2016-11-15 Giacomo Baggio , Augusto Ferrante

The main result of this paper states that a symplectic s-cobordism of elliptic 3-manifolds is diffeomorphic to a product (assuming a canonical contact structure on the boundary). Based on this theorem, we conjecture that a smooth…

Geometric Topology · Mathematics 2007-05-23 Weimin Chen

To each natural star product on a Poisson manifold $M$ we associate an antisymplectic involutive automorphism of the formal neighborhood of the zero section of the cotangent bundle of $M$. If $M$ is symplectic, this mapping is shown to be…

Quantum Algebra · Mathematics 2009-11-10 Alexander V. Karabegov

We use local Hamiltonian torus actions to degenerate a symplectic manifold to a normal crossings symplectic variety in a smooth one-parameter family. This construction, motivated in part by the Gross-Siebert and B. Parker's programs,…

Symplectic Geometry · Mathematics 2017-05-11 Mohammad Farajzadeh Tehrani , Aleksey Zinger

Let $M$ be a closed connected smooth manifold and $G=\textmd{Diff}_0(M)$ denote the connected component of the diffeomorphism group of $M$ containing the identity. The natural action of $G$ on $M$ induces the trace homomorphism on homology.…

Geometric Topology · Mathematics 2007-05-23 Yildiray Ozan

We consider invariant symplectic connections $\nabla$ on homogeneous symplectic manifolds $(M,\omega)$ with curvature of Ricci type. Such connections are solutions of a variational problem studied by Bourgeois and Cahen, and provide an…

Differential Geometry · Mathematics 2009-10-31 M. Cahen , S. Gutt , J. Horowitz , J. Rawnsley

We show that on the dual of a Lie algebra $\g$ of dimension $d$, the star-product recently introduced by M. Kontsevich is equivalent to the Gutt star-product on $\g^\ast$. We give an explicit expression for the operator realizing the…

Quantum Algebra · Mathematics 2007-05-23 Giuseppe Dito

For functions from the Sobolev space $H^s(\Omega)$, 1/2<s<3/2, definitions of non-unique generalised and unique canonical co-normal derivative are considered, which are related to possible extensions of a partial differential operator and…

Analysis of PDEs · Mathematics 2012-11-22 S. E. Mikhailov

A star-product formalism describing deformations of the standard quantum mechanical harmonic oscillator is introduced. A number of existing generalized oscillators occur as particular choises of star-products between the elements of the…

High Energy Physics - Theory · Physics 2008-02-03 Demosthenes Ellinas

In his earlier paper the author offered a program of generalization of Kolyvagin's result of finiteness of SH to the case of some motives which are quotients of cohomology motives of Shimura varieties. The present paper is devoted to the…

Algebraic Geometry · Mathematics 2007-11-14 D. Logachev

In the setting of continuous maps between compact orientable manifolds of the same dimension, there is a well known averaging formula for the coincidence Lefschetz number in terms of the Lefschetz numbers of lifts to some finite covering…

Algebraic Topology · Mathematics 2016-10-31 Jong Bum Lee , P. Christopher Staecker

Generalizing local Gromov-Witten theory, in this paper we define a local version of symplectic field theory. When the symplectic manifold with cylindrical ends is four-dimensional and the underlying simple curve is regular by automatic…

Symplectic Geometry · Mathematics 2013-02-25 Oliver Fabert

This paper studies the problem of maximizing the sum of traces of matrix quadratic forms on a product of Stiefel manifolds. This orthogonal trace-sum maximization (OTSM) problem generalizes many interesting problems such as generalized…

Optimization and Control · Mathematics 2021-02-09 Joong-Ho Won , Hua Zhou , Kenneth Lange

We evaluate explicitly, in terms of the asymptotic data, the ratio of the constant pre-factors in the large and small $x$ asymptotics of the tau functions for global solutions of the tt{*}-Toda equations. This constant problem for the…

Differential Geometry · Mathematics 2022-04-13 Ryosuke Odoi

In Riemannian computing applications, it is crucial to map manifold data to a Euclidean domain, where vector space arithmetic is available, and back. Classical manifold theory guarantees the existence of such mappings, called charts and…

Numerical Analysis · Mathematics 2026-05-08 Ralf Zimmermann