Results 21 to 30 of about 1,197 (175)

Functionals, functors and ultrametric spaces

open access: yesPracì Mìžnarodnogo Geometričnogo Centru, 2014
We consider different classes of functionals defined on the set of continuous functions on ultrametric spaces. Similarly as in the case of probability measures, idempotent measures, max-min measures and upper semicontinuous capacities we endow the sets ...
Лидия Базилевич   +2 more
doaj   +1 more source

On $\ast$-measure monads on the category of ultrametric spaces

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2022
The functor of $\ast$-measures of compact support on the category of ultrametric spaces and non-expanding maps is introduced in the previous publication of the authors.
Kh.O. Sukhorukova, M.M. Zarichnyi
doaj   +1 more source

Ultrametric spaces and logic programming

open access: yesThe Journal of Logic Programming, 2000
Summary: We prove a very general multivalued fixed point theorem for ultrametric spaces which at the same time is a generalization of the multivalued fixed point theorem of Khamsi, Kreinovich and Misane for generalized metric spaces and our (singlevalued) fixed point theorem for ultrametric spaces.
Sibylla Priess-Crampe, Paulo Ribenboim
openaire   +1 more source

A Note on Ultrametric Spaces, Minimum Spanning Trees and the Topological Distance Algorithm

open access: yesInformation, 2020
We relate the definition of an ultrametric space to the topological distance algorithm—an algorithm defined in the context of peer-to-peer network applications.
Jörg Schäfer
doaj   +1 more source

Best Proximity Pairs in Ultrametric Spaces [PDF]

open access: yesp-Adic Numbers, Ultrametric Analysis and Applications, 2021
In the present paper, we study the existence of best proximity pairs in ultrametric spaces. We show, under suitable assumptions, that the proximinal pair $(A,B)$ has a best proximity pair. As a consequence we generalize a well known best approximation result and we derive some fixed point theorems.
Chaira, Karim   +2 more
openaire   +2 more sources

The ultrametrical dynamics for the closed fractal-cluster resource models

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2013
The evolution scenario of the resource distribution in the fractal-cluster systems which are identified as organism on Burdakov's classification is suggested.
Vyacheslav Teodorovich Volov   +1 more
doaj   +1 more source

Random ultrametric trees and applications*

open access: yesESAIM: Proceedings and Surveys, 2017
Ultrametric trees are trees whose leaves lie at the same distance from the root. They are used to model the genealogy of a population of particles co-existing at the same point in time.
Lambert Amaury
doaj   +1 more source

Some results on ultrametric 2-normed spaces

open access: yesResearches in Mathematics
In this paper, we study the ultrametric 2-normed spaces and the ultrametric 2-Banach spaces. In particular, we establish some results on Cauchy sequences in ultrametric 2-normed spaces.
J. Ettayb
doaj   +1 more source

Modeling Fluid’s Dynamics with Master Equations in Ultrametric Spaces Representing the Treelike Structure of Capillary Networks

open access: yesEntropy, 2016
We present a new conceptual approach for modeling of fluid flows in random porous media based on explicit exploration of the treelike geometry of complex capillary networks.
Andrei Khrennikov   +2 more
doaj   +1 more source

Ultradiversification of Diversities

open access: yesAnalysis and Geometry in Metric Spaces, 2020
In this paper, using the idea of ultrametrization of metric spaces we introduce ultradiversification of diversities. We show that every diversity has an ultradiversification which is the greatest nonexpansive ultra-diversity image of it.
Haghmaram Pouya, Nourouzi Kourosh
doaj   +1 more source

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