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In this paper we shall prove that the singular locus of a symplectic singularity has no codimension 3 irreducible components. As a corollary, a symplectic singularity is terminal if and only if its singular locus has codimension $\geq 4$.…

Algebraic Geometry · Mathematics 2007-05-23 Yoshinori Namikawa

The type-Q equations lie on the top level of the hierarchy introduced by Adler, Bobenko and Suris (ABS) in their classification of discrete counterparts of KdV-type integrable partial differential equations. We ask what singularities are…

Exactly Solvable and Integrable Systems · Physics 2011-07-21 James Atkinson

We study steady solutions to the relativistic Boltzmann equation with hard-sphere interactions in a slab geometry. Under a spatial symmetry assumption in the transverse variables $x_2$ and $x_3$, the problem reduces to a one-dimensional…

Analysis of PDEs · Mathematics 2026-03-17 Jin Woo Jang , Seok-Bae Yun

Recently, the existence of robust three-dimensional light bullets (LBs) was predicted theoretically in the output of a laser coupled to a distant saturable absorber. In this manuscript, we analyze the stability and the range of existence of…

Optics · Physics 2017-08-16 S. V. Gurevich , J. Javaloyes

We prove a representation stability result for the codimension-one cohomology of the level three congruence subgroup of $\mathbf{SL}_n(\mathbb{Z})$. This is a special case of a question of Church-Farb-Putman which we make more precise. Our…

Algebraic Topology · Mathematics 2020-05-14 Jeremy Miller , Rohit Nagpal , Peter Patzt

Globally symmetric spinor condensates in free space are argued not to support stable topological defects in either two or three dimensions. In the latter case, however, we show that a topological Skyrmion can be stabilized by forcing it to…

Superconductivity · Physics 2007-05-23 Igor F. Herbut , Masaki Oshikawa

We prove the existence and we study the stability of the kink-like fixed points in a simple Coupled Map Lattice for which the local dynamics has two stable fixed points. The condition for the existence allows us to define a critical value…

patt-sol · Physics 2009-10-28 B. Fernandez

We introduce a general characterization of sudden cosmological singularities and investigate the classical stability of homogeneous and isotropic cosmological solutions of all curvatures containing these singularities to small scalar,…

General Relativity and Quantum Cosmology · Physics 2009-09-02 John D. Barrow , Sean Z. W. Lip

We show cocycle stability for linear maps with a weak irreducibility condition and their jointly integrable perturbations.

Dynamical Systems · Mathematics 2023-05-03 Ignacio Correa

We analyze the stability under time evolution of complexifier coherent states (CCS) in one-dimensional mechanical systems. A system of coherent states is called stable if it evolves into another coherent state. It turns out that a system…

General Relativity and Quantum Cosmology · Physics 2016-04-20 Antonia Zipfel , Thomas Thiemann

We show that for closed orientable manifolds the $k$-dimensional stable systole admits a metric-independent volume bound if and only if there are cohomology classes of degree $k$ that generate cohomology in top-degree. Moreover, it turns…

Geometric Topology · Mathematics 2008-04-17 Michael Brunnbauer

We prove the K-moduli space of cubic threefolds is identical to their GIT moduli. More precisely, the K-(semi,poly)-stability of cubic threefolds coincide to the corresponding GIT stabilities, which could be explicitly calculated. In…

Algebraic Geometry · Mathematics 2019-09-18 Yuchen Liu , Chenyang Xu

We prove that, in a generic single-field model, the consistency relation for the 3-point function in the squeezed limit receives corrections that vanish quadratically in the ratio of the momenta, i.e. as (k_L/k_S)^2. This implies that a…

Cosmology and Nongalactic Astrophysics · Physics 2014-01-16 Paolo Creminelli , Guido D'Amico , Marcello Musso , Jorge Noreña

We prove that the homology of the mapping class group of any 3-manifold stabilizes under connected sum and boundary connected sum with an arbitrary 3-manifold when both manifolds are compact and orientable. The stabilization also holds for…

Geometric Topology · Mathematics 2019-12-19 Allen Hatcher , Nathalie Wahl

We introduce the notions of categorical systoles and categorical volumes of Bridgeland stability conditions on triangulated categories. We prove that for any projective K3 surface, there exists a constant C depending only on the rank and…

Algebraic Geometry · Mathematics 2023-05-30 Yu-Wei Fan

This paper introduces the concept of dimensional stability for spline spaces over T-meshes, providing the first mathematical definition and a preliminary classification framework. We define dimensional stability as an invariant within the…

Numerical Analysis · Mathematics 2025-08-11 Bingru Huang , Falai Chen

We prove the stability with respect to the flux of solutions to initial-boundary value problems for scalar non-autonomous conservation laws in one space dimension. Key estimates are obtained through a careful construction of the solutions.

Analysis of PDEs · Mathematics 2019-06-12 Rinaldo M. Colombo , Elena Rossi

In three dimensions, the parabolic-elliptic Keller-Segel system exhibits a rich variety of singularity formations. Notably, it admits an explicit self-similar blow-up solution whose radial stability, conjectured more than two decades ago in…

Analysis of PDEs · Mathematics 2025-04-01 Zexing Li , Tao Zhou

We prove that for any infinite field homology stability for the third integral homology of the special linear groups $SL(n,F)$ begins at $n=3$. When $n=2$ the cokernel of the map from the third homology of $SL(2,F)$ to the third homology of…

K-Theory and Homology · Mathematics 2008-08-06 Kevin Hutchinson , Liqun Tao

We define a notion of stability for chiral ring of four dimensional N=1 theory by introducing test chiral rings and generalized a maximization. We conjecture that a chiral ring is the chiral ring of a superconformal field theory if and only…

High Energy Physics - Theory · Physics 2016-07-01 Tristan C. Collins , Dan Xie , Shing-Tung Yau