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We provide an axiomatic approach to the theory of local tangent cones of regular sub-Riemannian manifolds and the differentiability of mappings between such spaces. This axiomatic approach relies on a notion of a dilation structure which is…

Metric Geometry · Mathematics 2010-09-09 Svetlana Selivanova , Sergey Vodopyanov

We give a geometrical characterization of $\lambda$-prolongations of vector fields, and hence of $\lambda$-symmetries of ODEs. This allows an extension to the case of PDEs and systems of PDEs; in this context the central object is a…

Mathematical Physics · Physics 2009-11-10 G. Gaeta , P. Morando

We study reparametrization invariant Sobolev metrics on spaces of regular curves. We discuss their completeness properties and the resulting usability for applications in shape analysis. In particular, we will argue, that the development of…

Differential Geometry · Mathematics 2017-08-02 Martin Bauer , Martins Bruveris , Peter W. Michor

We introduce a new definition of nonpositive curvature in metric spaces and study its relationship to the existing notions of nonpositive curvature in comparison geometry. The main feature of our definition is that it applies to all metric…

Metric Geometry · Mathematics 2016-04-08 Miroslav Bačák , Bobo Hua , Jürgen Jost , Martin Kell , Armin Schikorra

We present a description of two dimensional Yang-Mills gauge theory on the plane and on compact surfaces, examining the topological, geometric and probabilistic aspects.

High Energy Physics - Theory · Physics 2007-07-30 Ambar N. Sengupta

On a smooth connected manifold, we consider all possible locally elliptic and locally bounded measurable coefficient Riemannian metrics called rough Riemannian metrics. We equip this set with an extended metric which is connected if and…

Differential Geometry · Mathematics 2025-07-15 Lashi Bandara , Anisa Hassan

The first aim of this paper is to examine some important properties of soft metric spaces. Second is to introduce soft continuous mappings and investigate properties of soft continuous mappings. Third is to prove some fixed point theorems…

General Mathematics · Mathematics 2013-08-22 Murat I. Yazar , Cigdem Gunduz , Sadi Bayramov

We study local convexity properties of the triangular ratio metric balls in proper subdomains of the real coordinate space. We also study inclusion properties of the visual angle metric balls and related hyperbolic type metric balls in the…

Metric Geometry · Mathematics 2017-11-13 Parisa Hariri , Riku Klén , Matti Vuorinen

Gromov introduced two distance functions, the box distance and the observable distance, on the space of isomorphism classes of metric measure spaces and developed the convergence theory of metric measure spaces. We investigate several…

Metric Geometry · Mathematics 2023-04-17 Daisuke Kazukawa , Hiroki Nakajima , Takashi Shioya

In this paper, we extend the notion of orthogonality to the general elements of an absolute matrix order unit space and relate it to the orthogonality among positive elements. We introduce the notion of a partial isometry in an absolute…

Functional Analysis · Mathematics 2019-12-13 Anil Kumar Karn , Amit kumar

Inspired by the concept of hyperconvexity and its relation to curvature, we translate geometric properties of a metric space encoded by the curvature inequalities into the persistent homology induced by the \v{C}ech filtration of that…

Geometric Topology · Mathematics 2020-01-29 Parvaneh Joharinad , Jürgen Jost

This paper discusses `geometric property (T)'. This is a property of metric spaces introduced in earlier work of the authors for its applications to K-theory. Geometric property (T) is a strong form of `expansion property': in particular…

Metric Geometry · Mathematics 2014-04-28 Rufus Willett , Guoliang Yu

Building on the recent work of Mushaandja and Olela-Otafudu~\cite{MushaandjaOlela2025} on modular metric topologies, this paper investigates extended structural properties of modular (pseudo)metric spaces. We provide necessary and…

General Topology · Mathematics 2025-10-21 Philani Rodney Majozi

The main purpose of this paper is to provide a second cohomology group of a (metric) Hom-Jacobi algebra with coefficients in a given representation. Moreover, we show that second cohomology group classifies abelian extensions of a (metric)…

Rings and Algebras · Mathematics 2024-02-14 Nejib Saadaoui

We apply the existence and special properties of Gauduchon metrics to give several applications. The first one is concerned with the implications of algebro-geometric nature under the existence of a Hermitian metric with nonnegative…

Differential Geometry · Mathematics 2022-05-11 Ping Li

This article provides a synthesis of recent advances in the study of the PI property in various classes of noncommutative algebras of polynomial type.

Rings and Algebras · Mathematics 2026-03-26 James Gómez , Claudia Gallego

We previously extended the Marsden-Ratiu reduction theorem in Poisson geometry by means of graded geometry (see Part I of Arxiv:1009.0948) . In this note we provide the background material about graded geometry necessary for the proof.…

Symplectic Geometry · Mathematics 2020-03-13 Alberto S. Cattaneo , Marco Zambon

In the present paper, we extend the Zamfirescu results ([9]) to A-metric spaces. Firstly, we define the notion of Zamfirescu mapping in A-metric spaces. After, we also obtain a fixed point theorem for such mappings. The established results…

Functional Analysis · Mathematics 2021-06-30 Isa Yildirim

We define the concept of an ultrametric M\"obius space and use this to characterize nonelementary geodesically complete trees.

Metric Geometry · Mathematics 2015-08-14 Jonas Beyrer , Viktor Schroeder

We study the concept of cone metric space in the context of ordered vector spaces by setting up a general and natural framework for it.

Functional Analysis · Mathematics 2014-01-08 Mert Çağlar , Zafer Ercan