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We consider the class of profinite diffeological spaces, that is, diffeological spaces which diffeologies are deduced by pull-back of diffeologies on finite-dimensional manifolds through a system of projection mappings. This class includes…

微分几何 · 数学 2025-10-29 Anahita Eslami-Rad , Jean-Pierre Magnot , Enrique G. Reyes

In the setting of the multidimensional Mellin analysis we introduce moduli of continuity and use them to define Besov-Mellin spaces. We prove that Besov-Mellin spaces are the interpolation spaces (in the sense of J.Peetre) between two…

泛函分析 · 数学 2024-09-09 Isaac Z. Pesenson

We define a two-dimensional space called the spinor-plane, where all spinors that can be decomposed in terms of Restricted Inomata-McKinley (RIM) spinors reside, and describe some of its properties. Some interesting results concerning the…

数学物理 · 物理学 2019-04-09 D. Beghetto , R. J. Bueno Rogerio , C. H. Coronado Villalobos

We give a translation of the article by L. V. Antonyan, "Classification of four-vectors of an eight-dimensional space," Trudy Sem. Vektor. Tenzor. Anal. 20 (1981), 144-161. MR622013. We include an appendix providing normal forms for each…

代数几何 · 数学 2025-10-17 Luke Oeding

We investigate the class of compact spaces which are embeddable into a power of the real line $R^\kappa$ in such a way that c_0(\kappa) is dense in the image. We show that this is a proper subclass of the class of Valdivia, even when…

一般拓扑 · 数学 2012-10-23 W. Kubiś , A. Leiderman

We introduce the definition of tensorized block rational Krylov subspaces and its relation with multivariate rational functions, extending the formulation of tensorized Krylov subspaces introduced in [Kressner D., Tobler C., Krylov subspace…

数值分析 · 数学 2023-06-02 Angelo Alberto Casulli

This article has a twofold purpose. On the one hand I would like to draw attention to some nice exercises on the Kepler laws, due to Otto Laporte from 1970. Our discussion here has a more geometric flavour than the original analytic…

辛几何 · 数学 2025-03-03 Gert Heckman

In this paper, we investigate the two-dimensional complex Finsler manifolds. The tools of this study are the complex Berwald frames and the Chern-Finsler connection with respect to these frames.

微分几何 · 数学 2010-10-19 Nicoleta Aldea , Gheorghe Munteanu

The purpose of this paper is to characterize all embeddings for versions of Besov and Triebel-Lizorkin spaces where the underlying Lebesgue space metric is replaced by a Lorentz space metric. We include two appendices, one on the relation…

泛函分析 · 数学 2019-06-11 Andreas Seeger , Walter Trebels

A modern elementary introduction to special relativity for advanced school children or first-year university students, in Russian. I try to demonstrate that relativity does not contradict common sense; on the contrary, it follows from…

科普物理 · 物理学 2015-06-02 Andrey Grozin

In this work an intrinsic projectively invariant distance is used to establish a new approach to the study of projective geometry in Finsler space. It is shown that the projectively invariant distance previously defined is a constant…

微分几何 · 数学 2013-10-03 M. Sepasi , B. Bidabad

The aim of the present paper is to investigate new types of recurrence in Finsler geometry, namely, hyper-generalized recurrence and generalized conharmonic recurrence. The properties of such recurrences and their relations to other Finsler…

微分几何 · 数学 2017-07-18 A. Soleiman

In this paper, we consider Kropina change of $m$-th root Finsler metrics. We find necessary and sufficient condition under which the Kropina change of an $m$-th root Finsler metric be locally dually flat. Then we prove that the Kropina…

微分几何 · 数学 2014-09-26 A. Tayebi , T. Tabatabaeifar , E. Peyghan

The pullback approach to global Finsler geometry is adopted. Three classes of recurrence in Finsler geometry are introduced and investigated: simple recurrence, Ricci recurrence and concircular recurrence. Each of these classes consists of…

微分几何 · 数学 2016-08-05 A. Soleiman , Nabil L. Youssef

We investigate the relation between weighted quasi-metric Spaces and Finsler Spaces. We show that the induced metric of a Randers space with reversible geodesics is a weighted quasi-metric space.

微分几何 · 数学 2014-01-07 Sorin V. Sabau , Kazuhiro Shibuya , Hideo Shimada

We are interested in studying doubling metric spaces with the property that at some of the points the metric tangent is unique. In such a setting, Finsler-Carnot-Caratheodory geometries and Carnot groups appear as models for the tangents.…

度量几何 · 数学 2010-12-13 Enrico Le Donne

The class of SHD spaces was recently introduced in [12]. The first part of this paper focuses on answering most of the questions presented in that article. For instance, we exhibit an example of a non-SHD Tychonoff space $X$ such that…

In this paper, we prove that for every Finsler metric on the 2-dimensional sphere there exist at least two distinct prime closed geodesics. For the case of the two-sphere, this solves an open problem posed by D. V. Anosov in 1974.

辛几何 · 数学 2009-09-29 Victor Bangert , Yiming Long

Before retiring, looking back to forty years of writing and publishing scientific papers, I decided to present to the scientific community a selection of my scientific works. I chose mostly articles published in prestigious journals or…

微分几何 · 数学 2012-10-01 Mihai Anastasiei

Translation of the paper "Interpolation of linear spaces and maximum estimates for solutions to parabolic equations" published in Russian in the collected volume "Partial differential equations", Akad. Nauk SSSR, Sibirsk. Otdel., Inst.…

偏微分方程分析 · 数学 2015-07-21 A. I. Nazarov