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We present a novel approach for deriving KAM-type linearization theorems directly -- and almost immediately -- from the existence of the stable foliation for a renormalization operator. We give a few illustrations in dynamics in one and…

Dynamical Systems · Mathematics 2026-05-21 Nataliya Goncharuk , Michael Yampolsky

Solving optimization tasks based on functions and losses with a topological flavor is a very active, growing field of research in data science and Topological Data Analysis, with applications in non-convex optimization, statistics and…

Computational Geometry · Computer Science 2021-02-19 Mathieu Carrière , Frédéric Chazal , Marc Glisse , Yuichi Ike , Hariprasad Kannan

We propose to extend ``invertibility'' to ``regularity'' for categories in general abstract algebraic manner. Higher regularity conditions and ``semicommutative'' diagrams are introduced. Distinction between commutative and…

Mathematical Physics · Physics 2007-05-23 Steven Duplij , Wladyslaw Marcinek

Let $f:X\times Y\times Z\longrightarrow W $ be a bounded tri-linear map on normed spaces. We say that $f$ is close-to-regular when $f^{t****s}=f^{s****t}$ and we say that $f$ is completely regular when all natural extensions are equal. In…

Functional Analysis · Mathematics 2019-11-05 Abotaleb Sheikhali , Ali Ebadian , Kazem Haghnejad Azar

We study the regularity of solutions of functional equations of a generalized mean value type. In this paper we give sufficient conditions for the regularity by using hypoellipticity which is a concept of the theory of partial differential…

funct-an · Mathematics 2016-08-31 A. Tsutsumi , S. Haruki

Under suitable conditions on the range of the Gauss map of a complete submanifold of Euclidean space with parallel mean curvature, we construct a strongly subharmonic function and derive a-priori estimates for the harmonic Gauss map. The…

Differential Geometry · Mathematics 2010-09-21 J. Jost , Y. L. Xin , Ling Yang

We consider the problem of graph-matching on a network of 3D shapes with uncertainty quantification. We assume that the pairwise shape correspondences are efficiently represented as \emph{functional maps}, that match real-valued functions…

Computer Vision and Pattern Recognition · Computer Science 2023-01-05 Faria Huq , Adrish Dey , Sahra Yusuf , Dena Bazazian , Tolga Birdal , Nina Miolane

We study monodromy of holomorphic motions and show the equivalence of triviality of monodromy of holomorphic motions and extensions of holomorphic motions to continuous motions of the Riemann sphere. We also study liftings of holomorphic…

Complex Variables · Mathematics 2020-06-02 Yunping Jiang , Sudeb Mitra

Consider transportation of one distribution of mass onto another, chosen to optimize the total expected cost, where cost per unit mass transported from x to y is given by a smooth function c(x,y). If the source density f^+(x) is bounded…

Analysis of PDEs · Mathematics 2018-01-23 Alessio Figalli , Young-Heon Kim , Robert J. McCann

This paper describes recent results obtained in collaboration with M. Huesmann and F. Otto on the regularity of optimal transport maps. The main result is a quantitative version of the well-known fact that the linearization of the…

Analysis of PDEs · Mathematics 2019-07-15 Michael Goldman

We relate Fubini's theorem for Euler characteristics to Riemann-Hurwtiz formulae, and reprove a classical result of Iversen. The techniques used include algebraic geometry, complex geometry, and model theory. Possible applications to the…

Algebraic Geometry · Mathematics 2009-03-20 Matthew Morrow

We give conditions in order to approximate locally uniformly holomorphic covering mappings of the unit ball of $\mathbb{C}^n$ with respect to an arbitrary norm, with entire holomorphic covering mappings. The results rely on a generalization…

Complex Variables · Mathematics 2023-06-16 Matteo Fiacchi

In the present paper we obtain a new homological version of the implicit function theorem and some versions of the Darboux theorem. Such results are proved for continuous maps on topological manifolds. As a consequence, some versions of…

Algebraic Topology · Mathematics 2007-06-28 Carlos Biasi , Carlos Gutierrez , Edivaldo L. dos Santos

We study universal approximation of continuous functionals on compact subsets of products of Hilbert spaces. We prove that any such functional can be uniformly approximated by models that first take finitely many continuous linear…

Machine Learning · Computer Science 2026-02-04 Andrey Krylov , Maksim Penkin

We show how Lasry-Lions's result on regularization of functions defined on $\mathbb{R}^n$ or on Hilbert spaces by sup-inf convolutions with squares of distances can be extended to (finite or infinite dimensional) Riemannian manifolds $M$ of…

Differential Geometry · Mathematics 2014-01-21 Daniel Azagra , Juan Ferrera

This paper studies large-scale optimization problems on Riemannian manifolds whose objective function is a finite sum of negative log-probability losses. Such problems arise in various machine learning and signal processing applications. By…

Optimization and Control · Mathematics 2022-07-18 Jiang Hu , Ruicheng Ao , Anthony Man-Cho So , Minghan Yang , Zaiwen Wen

Motivated by the substantial development of the special functions, we contribute to establish some rigorous results on the general series identities with bounded sequences and hypergeometric functions with different arguments, which are…

General Mathematics · Mathematics 2019-02-19 Mohammad Idris Qureshi , Saima Jabee , Mohammad Shadab

We study the possibility of a continuous extension of a class of mappings to an isolated point on the boundary of a domain. We show that if some characteristic of this mapping is integrable on almost all spheres in the neighborhood of at…

Complex Variables · Mathematics 2025-11-04 Victoria Desyatka , Evgeny Sevost'yanov

Let $\mathcal{F}\subset\mathcal{M}(D)$ and let $a, b$ and $c$ be three distinct complex numbers. If, there exist a holomorphic function $h$ on $D$ and a positive constant $\rho$ such that for each $f\in\mathcal{F},$ $f$ and $f^{'}$…

Complex Variables · Mathematics 2024-11-11 Kuldeep Singh Charak , Manish Kumar , Anil Singh

Let F and G be two families of meromorphic functions on a domain D, and let a, b and c be three distinct points in the extended complex plane. Let G be a normal family in D such that all limit functions of G are non-constant. If for each f…

Complex Variables · Mathematics 2021-04-02 Kuldeep Singh Charak , Manish Kumar , Rahul Kumar