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In this paper we introduce the concept of generalized vector groupoid. Several properties of them are established.

Group Theory · Mathematics 2011-01-10 Vasile Poputa , Gheorghe Ivan

The generalized divided differences are introduced. They are applied to investigate some properties characterizing generalized higher-order convexity. Among others some support-type property is proved.

Functional Analysis · Mathematics 2008-07-28 Szymon Wasowicz

In this note we introduce generalised pairs from the perspective of the evolution of the notion of space in birational algebraic geometry. We describe some applications of generalised pairs in recent years and then mention a few open…

Algebraic Geometry · Mathematics 2020-08-10 Caucher Birkar

In this paper, we prove a generalization of Geraghty's fixed point theorem for multi--valued mappings.

Functional Analysis · Mathematics 2009-12-23 M. Eshaghi Gordji , M. Ramezani , H. Khodaei , H. Baghani

We prove some extension theorems involving uniformly continuous maps of the universal Urysohn space. We also prove reconstruction theorems for certain groups of autohomeomorphisms of this space and of its open subsets.

Metric Geometry · Mathematics 2012-10-23 Wieslaw Kubiś , Matatyahu Rubin

We prove a very general theorem concerning the estimation of the expression $\|T(\frac{a+b}{2}) - \frac{Ta+Tb}{2}\|$ for different kinds of maps $T$ satisfying some general perurbated isometry condition. It can be seen as a quantitative…

Functional Analysis · Mathematics 2011-05-05 Rafal Gorak

In this note we correct a paper by D. Kang ("On the Mazur-Ulam theorem in non-Archimedean fuzzy anti-2-normed spaces", Filomat, 2017). The research in that paper applies to what the author calls strictly convex spaces. Nevertheless, we…

Functional Analysis · Mathematics 2021-02-23 Javier Cabello Sánchez , José Navarro Garmendia

We study the space of generalized translation invariant valuations on a finite-dimensional vector space and construct a partial convolution which extends the convolution of smooth translation invariant valuations. Our main theorem is that…

Differential Geometry · Mathematics 2017-06-22 Andreas Bernig , Dmitry Faifman

The aim of this text is to extend the theory of generalized ordinary differential equations to the setting of metric spaces. We present existence and uniqueness theorems that significantly improve previous results even when restricted back…

Classical Analysis and ODEs · Mathematics 2018-02-12 Břetislav Skovajsa

We study vector spaces associated to a family of generalized Euler integrals. Their dimension is given by the Euler characteristic of a very affine variety. Motivated by Feynman integrals from particle physics, this has been investigated…

Algebraic Geometry · Mathematics 2025-05-27 Daniele Agostini , Claudia Fevola , Anna-Laura Sattelberger , Simon Telen

We show that although the Galvin-Prikry Theorem does not hold on generalized Baire space with the standard topology, there are similar theorems which do hold on generalized Baire space with certain coarser topologies.

Logic · Mathematics 2018-01-18 Dan Hathaway

In this paper some results on the topology of the space of $k$-flats in $\mathbb R^n$ are proved, similar to the Borsuk-Ulam theorem on coverings of sphere. Some corollaries on common transversals for families of compact sets in $\mathbb…

Combinatorics · Mathematics 2011-07-06 R. N. Karasev

In this article we present a generalization of a Leibniz's geometrical theorem and an application of it.

General Mathematics · Mathematics 2007-10-02 Mihaly Bencze , Florin Popovici , Florentin Smarandache

We extend the assertion of the Generalized Lower Bound Theorem (GLBT) to general polytopes under the assumption that their low dimensional skeleton is simplicial, with partial results for the general case. We prove a quantitative version of…

Combinatorics · Mathematics 2019-01-10 Karim Adiprasito , Mikhail Burens , Eran Nevo

In this paper we make some observations concerning m-metric spaces and point out some discrepancies in the proofs found in the literature. To remedy this, we propose a new topological construction and prove that it is in fact a…

General Topology · Mathematics 2018-07-03 Samer Assaf

In this paper, we investigate the invertibility of generalized g-Bessel multipliers. We show that for semi-normalized symbols, the inverse of any invertible generalized g-frame multiplier can be represented as a generalized g-frame…

Functional Analysis · Mathematics 2019-06-18 M. Abolghasemi , Y. Tolooei , Z. Moosavianfard

In this paper, we propose a geometrical proof of the generalized mirror transformation of genus 0 Gromov-Witten invariants of degree k hypersurface in CP^{N-1}.

Algebraic Geometry · Mathematics 2024-01-09 Masao Jinzenji

An operator generalisation of the notion of geometric phase has been recently proposed purely based on physical grounds. Here we provide a mathematical foundation for its existence, while uncovering new geometrical structures in quantum…

Quantum Physics · Physics 2023-12-25 Vivek M. Vyas

We generalize Rado's extension theorem to complex spaces.

Complex Variables · Mathematics 2021-01-12 V. Vijiitu

This paper introduces a notion of generalised geometric logic. Connections of generalised geometric logic with L-topological system and L-topological space are established.

Logic · Mathematics 2019-09-06 P. Jana