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Symmetric products of Riemann surfaces play a crucial role in symplectic geometry and low-dimensional topology. Symmetric products of punctured surfaces are Liouville manifolds of interest e.g. for Heegaard Floer theory. We study the…

Symplectic Geometry · Mathematics 2025-11-21 Xinle Dai

In [8], Arveson proved that a $1$-parameter decomposable product system is isomorphic to the product system of a CCR flow. We show that the structure of a generic decomposable product system, over higher dimensional cones, modulo twists by…

Operator Algebras · Mathematics 2022-12-20 C. H. Namitha , S. Sundar

We construct branched double coverings by certain direct products of manifolds for connected sums of copies of sphere bundles over the 2-sphere. As an application we answer a question of Kotschick and Loeh up to dimension five. More…

Geometric Topology · Mathematics 2019-09-09 Christoforos Neofytidis

If M is a manifold with compressible boundary, we analyze essential disks in M, as well as incompressible, but not necessarily boundary incompressible, surfaces in M. We are most interested in the case where M is a handlebody or compression…

Geometric Topology · Mathematics 2010-05-06 Charalampos Charitos , Ulrich Oertel

This is the third in a series of papers constructing hyperbolic structures on all Haken three-manifolds. This portion deals with the mixed case of the deformation space for manifolds with incompressible boundary that are not acylindrical,…

Geometric Topology · Mathematics 2007-05-23 William P. Thurston

We study properties of Cartesian products of digital images for which adjacencies based on the normal product adjacency are used. We show that the use of such adjacencies lets us obtain many "product properties" for which the analogous…

General Topology · Mathematics 2017-06-27 Laurence Boxer

One can embed arbitrarily many disjoint, non-parallel, non-boundary parallel, incompressible surfaces in any three manifold with at least one boundary component of genus two or greater [4]. This paper proves the contrasting, but not…

Geometric Topology · Mathematics 2007-05-23 Hugh Nelson Howards

In this note we give a complete classification of all indecomposable yet reducible representations of $B_3$ for dimensions $2$ and $3$ over an algebraically closed field $K$ with characteristic $0$, up to equivalence. We illustrate their…

Representation Theory · Mathematics 2024-12-12 Eric C. Rowell , Yuze Ruan

In this article, we give a geometric description for any invertible operator on a finite dimensional inner--product space. With the aid of such a description, we are able to decompose any given conformal transformation as a product of…

General Mathematics · Mathematics 2013-09-24 Srikanth K. V. , Raj Bhawan Yadav

We create Resthetikhin-Turaev topological invariants of closed orientable three-manifolds from the quantum supergroup U_q(osp(1|2n)) at certain even roots of unity. To construct the invariants we develop tensor product theorems for finite…

Quantum Algebra · Mathematics 2007-05-23 Sacha Blumen

In this paper we consider minimal Lagrangian submanifolds in $n$-dimensional complex space forms. More precisely, we study such submanifolds which, endowed with the induced metrics, write as a Riemannian product of two Riemannian manifolds,…

Differential Geometry · Mathematics 2019-12-12 Xiuxiu Cheng , Zejun Hu , Marilena Moruz , Luc Vrancken

After a brief description of the $\mathbb{Z}$-graded differential Poisson algebra, we introduce a covariant star product for exterior differential forms and give an explicit expression for it up to second order in the deformation parameter…

High Energy Physics - Theory · Physics 2010-05-13 Shannon McCurdy , Bruno Zumino

This paper continues the study of decompositions of a smooth 4-manifold into two handlebodies with handles of index $\leq2$. Part I gave existence results in terms of spines and chain complexes over the fundamental group of the ambient…

Geometric Topology · Mathematics 2007-05-23 Frank Quinn

We explicitly construct noncommutative * products on circularly symmetric two dimensional space by using the technique of Fedosov's deformation quantization. Especially, on constant curvature spaces i.e., S^2 and H^2, we get su(2) and…

High Energy Physics - Theory · Physics 2010-02-03 Isao Kishimoto

We provide conditions under which an isometric immersion of a (warped) product of manifolds into a space form must be a (warped) product of isometric immersions.

Differential Geometry · Mathematics 2011-11-16 M. Dajczer , T. Vlachos

We discuss various aspects of "braid spaces'' or configuration spaces of unordered points on manifolds. First we describe how the homology of these spaces is affected by puncturing the underlying manifold, hence extending some results of…

Algebraic Topology · Mathematics 2008-07-07 Sadok Kallel

One can define what it means for a compact manifold with corners to be a "contractible manifold with contractible faces." Two combinatorially equivalent, contractible manifolds with contractible faces are diffeomorphic if and only if their…

Geometric Topology · Mathematics 2014-07-24 Michael W. Davis

We develop an approach to calculating the cup and cap products on Hochschild cohomology and homology of curved algebras associated with polynomials and their finite abelian symmetry groups. For polynomials with isolated critical points, the…

Algebraic Geometry · Mathematics 2017-08-29 Dmytro Shklyarov

We establish a quantitative relationship between mixed de Rham classes and the geometric complexity of metric connections with totally skew torsion on product manifolds where both factors are compact oriented surfaces. For any…

Differential Geometry · Mathematics 2026-04-21 Alexander Pigazzini , Magdalena Toda

We consider a product of fundamental crystals in monomial realization of type A. Then we shall show that the product holds crystal structure and describe how it is decomposed into irreducible crystals, which is, in general, different from…

Quantum Algebra · Mathematics 2018-08-15 Manal Alshuqayr , Toshiki Nakashima