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We introduce a new map between configuration spaces of points in a background manifold - the replication map - and prove that it is a homology isomorphism in a range with certain coefficients. This is particularly of interest when the…

Algebraic Topology · Mathematics 2015-09-21 Federico Cantero , Martin Palmer

The classical plane Couette flow, plane Poiseuille flow, and pipe Poiseuille flow share some universal 3D steady coherent structure in the form of "streak-roll-critical layer". As the Reynolds number approaches infinity, the steady coherent…

Fluid Dynamics · Physics 2009-11-11 Y. Charles Li

In this paper we construct new examples of stable bundles of rank 2 of small degree with 4 sections on a smooth irreducible curve of maximal Clifford index. The corresponding Brill-Noether loci have negative expected dimension of…

Algebraic Geometry · Mathematics 2010-11-04 H. Lange , P. E. Newstead

We describe the GIT compactification for the moduli space of smooth quintic surfaces in projective space. In particular, we show that a normal quintic surface with at worst an isolated double point or a minimal elliptic singularity is…

Algebraic Geometry · Mathematics 2016-08-09 Patricio Gallardo

We establish the canonical class inequality for families of higher dimensional projective manifolds. As an application, we get a new inequality between the Chern numbers of 3-folds with smooth families of minimal surfaces of general type…

Algebraic Geometry · Mathematics 2010-09-30 Jun Lu , Sheng-Li Tan , Kang Zuo

By defining projective error models we study the mathematical structure of Clifford codes and stabilizer codes using tools from projective representation theory. Furthermore, we introduce a new class of codes which we have called weak…

Quantum Physics · Physics 2026-02-26 Jonas Eidesen

We define and study a gluing procedure for Bridgeland stability conditions in the situation when a triangulated category has a semiorthogonal decomposition. As an application we construct stability conditions on the derived categories of…

Algebraic Geometry · Mathematics 2010-05-17 John Collins , Alexander Polishchuk

We construct tilt stability conditions on surface root stacks and show that they have support property with respect to the rational Chen-Ruan cohomology.

Algebraic Geometry · Mathematics 2024-12-24 Yeqin Liu , Yu Shen

In this paper, we study planar polygonal curves from the variational methods. We show an unified interpretation of discrete curvatures and the Steiner-type formula by extracting the notion of the discrete curvature vector from the first…

Differential Geometry · Mathematics 2020-04-17 Yoshiki Jikumaru

Let C be a smooth projective curve with genus g>1 and Clifford index c(C) and let L be a line bundle on C generated by its global sections. The morphism i:C -->P(H^0(L))=P is well-defined and i*T is the restriction to C of the tangent…

Algebraic Geometry · Mathematics 2007-12-06 Chiara Camere

In this paper, we investigate the stability manifold of local models of orbifold quotients of elliptic curves. In particular, we describe a component of the stability manifold which maps as a covering space onto the universal unfolding…

Algebraic Geometry · Mathematics 2022-09-01 Franco Rota

We prove that smoothness of nonautonomous linearization is of class $C^2.$ Our approach admits the existence of stable and unstable manifolds determined by a family of nonautonomous hyperbolicities. Moreover, our goal is reached without…

Dynamical Systems · Mathematics 2021-07-15 Nestor Jara

A triangulated category $\mathcal{C}$ with a canonical Bott's isomorphism $[2]\xrightarrow{\sim}id$ is called a cyclic category in this paper. We give a new notion of stability conditions on a $k$-linear Krull-Schmidt cyclic category. Given…

Algebraic Geometry · Mathematics 2023-05-08 Yucheng Liu

Singularity Theory is used to comprehensively investigate the bifurcations of the steady-states of the traveling wave ODEs of the cubic-quintic Ginzburg-Landau equation (CGLE). These correspond to plane waves of the PDE. In addition to the…

Pattern Formation and Solitons · Physics 2015-10-07 Stefan C. Mancas , S. Roy Choudhury

Using examples of compact complex 3-manifolds which arise as twistor spaces, we show that the class of compact complex manifolds bimeromorphic to K\"ahler manifolds is not stable under small deformations of complex structure.

alg-geom · Mathematics 2008-02-03 Claude LeBrun , Yat-Sun Poon

Recent studies suggest that unstable, non-chaotic solutions of the Navier-Stokes equation may provide deep insights into fluid turbulence. In this article, we present a combined experimental and numerical study exploring the dynamical role…

Fluid Dynamics · Physics 2018-08-29 Balachandra Suri , Jeffrey Tithof , Roman O. Grigoriev , Michael F. Schatz

We study the stability of closed, not necessarily smooth, equilibrium surfaces of an anisotropic surface energy for which the Wulff shape is not necessarily smooth. We show that if the Cahn Hoffman field can be extended continuously to the…

Differential Geometry · Mathematics 2011-10-20 Bennett Palmer

This paper develops a computational method for studying stable/unstable manifolds attached to periodic orbits of differential equations. The method uses high order Chebyshev-Taylor series approximations in conjunction with the…

Numerical Analysis · Mathematics 2018-02-14 J. D. Mireles James , Maxime Murray

Competing nonlinearities, such as the cubic (Kerr) and quintic nonlinear terms whose strengths are of opposite signs (the coefficients in front of the nonlinearities), exist in various physical media (in particular, in optical and…

Pattern Formation and Solitons · Physics 2019-10-23 Liangwei Zeng , Jianhua Zeng

We determine the gonality and the Clifford index for curves on a compact smooth toric surface. Moreover, it is shown that their gonality are computed by pencils on the ambient surface. From the geometrical view point, this means that the…

Algebraic Geometry · Mathematics 2013-10-22 Ryo Kawaguchi