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We give a new proof for the self-improvement of uniform p-fatness in the setting of general metric spaces. Our proof is based on rather standard methods of geometric analysis, and in particular the proof avoids the use of deep results from…

Classical Analysis and ODEs · Mathematics 2015-12-22 Juha Lehrbäck , Heli Tuominen , Antti V. Vähäkangas

We finish proving that an irreducible automorphism f of a handlebody is efficient if, and only if, a certain standard pair of dual f--invariant laminations have the geometric tightness property. In a previous paper it was proved that this…

Geometric Topology · Mathematics 2013-05-28 Leonardo N. Carvalho

We study the relationship between the Frobenius stability of an Artinian module over an F-injective ring and its stable part.

Commutative Algebra · Mathematics 2009-06-25 Florian Enescu

Filopodia are long, finger-like membrane tubes supported by cytoskeletal filaments. Their shape is determined by the stiffness of the actin filament bundles found inside them and by the interplay between the surface tension and bending…

Subcellular Processes · Quantitative Biology 2008-06-24 Sander Pronk , Phillip L. Geissler , Daniel A. Fletcher

We consider Hyers-Ulam stability of a functional equation for continuous functions on a space on which a topological group acts, analogous to the additive functional equation on a group. We show, among other things, that our generalized…

Functional Analysis · Mathematics 2015-10-08 Maysam Maysami Sadr

In this paper we establish the stability of the functional equation $$f(x-y)=f(x)g(y)+g(x)f(y)+h(x)h(y)),\;\; x,y \in G, $$where $G$ is an abelian group.

Commutative Algebra · Mathematics 2018-10-25 Ajebbar Omar , Elqorachi Elhoucien , Themistocles M. Rassias

We show a strong Hamiltonian stability result for a simpler and larger distance on the Tamarkin category. We also give a stability result with support conditions.

Symplectic Geometry · Mathematics 2023-07-21 Tomohiro Asano , Yuichi Ike

This paper proves that in Size Theory the comparison of multidimensional size functions can be reduced to the 1-dimensional case by a suitable change of variables. Indeed, we show that a foliation in half-planes can be given, such that the…

Computational Geometry · Computer Science 2007-05-23 Andrea Cerri , Patrizio Frosini , Claudia Landi

We study the stability properties of nodal sets of Laplace eigenfunctions on compact manifolds under specific small perturbations. We prove that nodal sets are fairly stable if said perturbations are relatively small, more formally,…

Analysis of PDEs · Mathematics 2020-11-19 Mayukh Mukherjee , Soumyajit Saha

For studying the local topology of maps, one uses deformations which split the singularities into simpler ones while preserving the general fibres. We give conditions under which such conservation holds.

Algebraic Geometry · Mathematics 2024-10-07 Ying Chen , Cezar Joiţa , Mihai Tibăr

This paper extends the results of "Operads and Algebraic Homotopy" in giving algebraic invariants for the stable homotopy type of a pointed simply-connected simplicial set.

Algebraic Topology · Mathematics 2007-05-23 Justin R. Smith

In this paper we prove stability results for the homology of the mapping class group of a surface. We get a stability range that is near optimal, and extend the result to twisted coefficients.

Algebraic Topology · Mathematics 2009-04-22 Søren K. Boldsen

Proceeded from the gravitation equations proposed by one of authors it was argued in a previous paper that there can exist supermassive compact configurations of degenerated Fermi-gas without events horizon. In the present paper we consider…

Astrophysics · Physics 2009-11-13 L. Verozub , A. Kochetov

In this paper homology stability for unitary groups over a ring with finite unitary stable rank is established. Homology stability of symplectic groups and orthogonal groups appears as a special case of our results.

K-Theory and Homology · Mathematics 2007-05-23 Behrooz Mirzaii , Wilberd van der Kallen

We prove large-data local stability theorems for several spin models in two dimensions.

Analysis of PDEs · Mathematics 2009-06-09 I. Bejenaru , A. D. Ionescu , C. E. Kenig

It is, by now, classical that lattices in higher rank semisimple groups have various rigidity properties. In this work, we add another such rigidity property to the list: uniform stability with respect to the family of unitary operators on…

Group Theory · Mathematics 2023-07-11 Lev Glebsky , Alexander Lubotzky , Nicolas Monod , Bharatram Rangarajan

Functional proteins must fold with some minimal stability to a structure that can perform a biochemical task. Here we use a simple model to investigate the relationship between the stability requirement and the capacity of a protein to…

Biomolecules · Quantitative Biology 2009-11-10 Jesse D Bloom , Claus O Wilke , Frances H Arnold , Christoph Adami

We prove fractional order Hardy inequalities on open sets under a combined fatness and visibility condition on the boundary. We demonstrate by counterexamples that fatness conditions alone are not sufficient for such Hardy inequalities to…

Classical Analysis and ODEs · Mathematics 2015-12-23 Lizaveta Ihnatsyeva , Juha Lehrbäck , Heli Tuominen , Antti V. Vähäkangas

We develop a stability theory for contractive local IFSs on compact metric spaces. Unlike the classical global setting, local systems may exhibit a richer symbolic and geometric structure, including code spaces that are not of finite type…

Dynamical Systems · Mathematics 2026-05-05 Elismar R. Oliveira , Paulo Varandas

We investigate the stability of fibers of coisotropic fibrations on holomorphic symplectic manifolds and generalize Voisin's result on Lagrangian subvarieties to this framework. We present applications to the moduli space of holomorphic…

Algebraic Geometry · Mathematics 2016-01-26 Christian Lehn , Gianluca Pacienza