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We develop foundational aspects of stability theory in affine logic. On the one hand, we prove appropriate affine versions of many classical results, including definability of types, existence of non-forking extensions, and other…

Logic · Mathematics 2026-03-11 Itaï Ben Yaacov , Tomás Ibarlucía

The paper is concerned with the stability of the set of trajectories of a vector field, in the presence of impulsive perturbations. Patchy vector fields are discontinuous, piecewise smooth vector fields that were introduced in AB to study…

Optimization and Control · Mathematics 2007-05-23 Fabio Ancona , Alberto Bressan

In the first part of this article, we consider ruled surfaces defined over a finite field; we introduce invariants for them, and describe some explicit contructions that illustrate possible behaviour of these invariants. In the second part,…

Information Theory · Computer Science 2025-09-24 Régis Blache , Emmanuel Hallouin

This paper is concerned with the complexity and stability of arithmetic operations in the jacobian variety of curves over the field of complex numbers, as the genus grows to infinity. We focus on modular curves. Efficient and stable…

Number Theory · Mathematics 2007-05-23 Jean-Marc Couveignes

We give examples of sequences of smooth non-isotrivial curves for every genus at least two, defined over a rational function field of positive characteristic, such that the (finite) number of rational points of the curves in the sequence…

Number Theory · Mathematics 2016-08-14 Ricardo Conceição , Douglas Ulmer , José Felipe Voloch

We prove constancy of Newton polygons of all convergent $F$-isocrystals on Abelian varieties over finite fields. Applying the constancy, we prove the isotriviality of projective smooth families of curves over Abelian varieties. We also…

Algebraic Geometry · Mathematics 2017-04-17 Nobuo Tsuzuki

We investigate relations between the pseudo-orbit-tracing property, topological stability and openness for tree-shifts. We prove that a tree-shift is of finite type if and only if it has the pseudo-orbit-tracing property which implies that…

Dynamical Systems · Mathematics 2024-03-08 Dawid Bucki

We find all the possible torsion groups of $\Q$-curves over quadratic fields and determine which groups appear finitely and which appear infinitely often.

Number Theory · Mathematics 2019-03-04 Samuel Le Fourn , Filip Najman

We prove a general homological stability theorem for certain families of groups equipped with product maps, followed by two theorems of a new kind that give information about the last two homology groups outside the stable range. (These…

Algebraic Topology · Mathematics 2020-07-13 Richard Hepworth

We provide lower and upper bounds on the minimum size of a maximum stable set over graphs of flag spheres, as a function of the dimension of the sphere and the number of vertices. Further, we use stable sets to obtain an improved Lower…

Combinatorics · Mathematics 2022-04-05 Maria Chudnovsky , Eran Nevo

In this paper we establish new characterizations of stable derivators, thereby obtaining additional interpretations of the passage from (pointed) topological spaces to spectra and, more generally, of the stabilization. We show that a…

Algebraic Topology · Mathematics 2016-02-25 Moritz Groth

This note revisits stability conditions on the bounded derived categories of coherent sheaves on irreducible projective curves. In particular, all stability conditions on smooth curves are classified and a connected component of the…

Algebraic Geometry · Mathematics 2026-02-25 Ziqi Liu

We give the distribution of points on smooth superelliptic curves over a fixed finite field, as their degree goes to infinity. We also give the distribution of points on smooth m-fold cyclic covers of the line, for any m, as the degree of…

Number Theory · Mathematics 2012-10-03 GilYoung Cheong , Melanie Matchett Wood , Azeem Zaman

The stability radius for finitely many interconnected linear exponentially stable well-posed systems with respect to static perturbations is studied. If the output space of each system is finite-dimensional, then a lower bound for the…

Functional Analysis · Mathematics 2019-12-05 Birgit Jacob , Sebastian Möller , Christian Wyss

Distortion maps allow one to solve the Decision Diffie-Hellman problem on subgroups of points on the elliptic curve. In the case of ordinary elliptic curves over finite fields, it is known that in most cases there are no distortion maps. In…

Number Theory · Mathematics 2007-05-23 Denis Charles

We investigate diagonal forms of degree $d$ over the function field $F$ of a smooth projective $p$-adic curve: if a form is isotropic over the completion of $F$ with respect to each discrete valuation of $F$, then it is isotropic over…

Number Theory · Mathematics 2021-04-13 Susanne Pumpluen

We model the phase oscillations of electrons in race-track microtrons by means of an area preserving map with a fixed point at the origin, which represents the synchronous trajectory of a reference particle in the beam. We study the…

Dynamical Systems · Mathematics 2023-09-19 Yu. A. Kubyshin , O. Larreal , R. Ramírez-Ros , T. M. Seara

We consider stable representations of non-Dynkin quivers with respect to a central charge. On one condition the existence of a stable representation with self-extensions implies the existence of infinitely many stables without…

Representation Theory · Mathematics 2015-01-23 Magnus Engenhorst

In this article, we study the behavior of the stability of pullback of a vector bundle under a finite morphism from a (not necessarily smooth) stacky curve to an orbifold curve. We establish a categorical equivalence between proper formal…

Algebraic Geometry · Mathematics 2022-11-07 Soumyadip Das , Snehajit Misra

This paper examines the frame properties of finitely and infinitely iterated dyadic filter banks. It is shown that the stability of an infinitely iterated dyadic filter bank guarantees that of any associated finitely iterated dyadic filter…

Classical Analysis and ODEs · Mathematics 2022-12-22 Marcin Bownik , Brody Johnson , Simon McCreary-Ellis
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