Buscar en RiuNet

Listar

Todo RiuNet

Mi cuenta

Acceder

Ayuda RiuNet

Admin. UPV

Listar por palabra clave "Compactness"

Mostrando ítems 1-19 de 19

A quantitative version of Krein's theorems for Fréchet spaces

Angosto Hernández, Carlos; Kakol, Jerzy; Kubzdela, Albert; López Pellicer, Manuel (Springer Verlag (Germany), 2013-05)

For a Banach space E and its bidual space E'', the function k(H) defined on bounded subsets H of E measures how far H is from being σ(E,E')-relatively compact in E. This concept, introduced independently by Granero, ...
A short note on hit-and-miss hyperspaces

Bartsch, René; Poppe, Harry (Universitat Politècnica de València, 2003-10-01)

[EN] Based on some set-theoretical observations, compactness results are given for general hit-and-miss hyperspaces. Compactness here is sometimes viewed splitting into “κ-Lindelöfness” and “κ-compactness” for cardinals ...
A topological approach to Best Approximation Theory

Moreno, Samuel G.; Almira, Jose María; García-Caballero, Esther M.; Quesada, J.M. (Universitat Politècnica de València, 2004-04-01)

[EN] The main goal of this paper is to put some light in several arguments that have been used through the time in many contexts of Best Approximation Theory to produce proximinality results. In all these works, the main ...
Caracterización de mutantes de tomate con un crecimiento compacto

Prósper Ortega, Laura (Universitat Politècnica de València, 2018-09-18)

[ES] El conocimiento de los genes clave que afectan al desarrollo de las plantas y su interacción con agentes externos es un aspecto muy importante, tanto a efectos básicos como aplicados. Para abordar la identificación ...
Cauchyness and convergence in fuzzy metric spaces

Gregori Gregori, Valentín; Miñana, Juan-José; Morillas, Samuel; Sapena Piera, Almanzor (Springer-Verlag, 2017)

[EN] In this paper we survey some concepts of convergence and Cauchyness appeared separately in the context of fuzzy metric spaces in the sense of George and Veeramani. For each convergence (Cauchyness) concept we find a ...
Compact convex sets in 2-dimensional asymmetric normed lattices

Jonard-Perez, Natalia; Sánchez Pérez, Enrique Alfonso (Informa UK (National Inquiry Services Center), 2016)

[EN] In this note, we study the geometric structure of compact convex sets in 2-dimensional asymmetric normed lattices. We prove that every q-compact convex set is strongly q-compact and we give a complete geometric ...
Compactness in L1 of a vector measure

Calabuig Rodriguez, Jose Manuel; Lajara, S.; Rodríguez Ruiz, José; Sánchez Pérez, Enrique Alfonso (Polskiej Akademii Nauk, Instytut Matematyczny (Polish Academy of Sciences, Institute of Mathematics), 2014)

We study compactness and related topological properties in the space L1(m) of a Banach space valued measure m when the natural topologies associated to convergence of vector valued integrals are considered. The resulting ...
Compactness in spaces of p-integrable functions with respect to a vector measure

Rueda Segado, Maria Pilar; Sánchez Pérez, Enrique Alfonso (JULIUSZ SCHAUDER CTR NONLINEAR STUDIES, 2015-06)

[EN] We prove that, under some reasonable requirements, the unit balls of the spaces Lp(m) and Loo(m) of a vector measure of compact range m are compact with respect to the topology t_m of pointwise convergence of the ...
Compactness in the endograph uniformity

Sánchez, Iván (Universitat Politècnica de València, 2024-04-02)

[EN] Given a uniform space (X,U), we denote by F*(X) to the family of fuzzy sets u in (X,U) such that u is normal and upper semicontinuous. Let UE be the endograph uniformity on F*(X). In this paper, we mainly characterize ...
Compactness properties of bounded subsets of spaces of vector measure integrable functions and factorization of operators

Garcia-Raffi, L. M.; Sánchez-Pérez, E.A. (Universitat Politècnica de València, 2005-10-01)

[EN] Using compactness properties of bounded subsets of spaces of vector measure integrable functions and a representation theorem for q-convex Banach lattices, we prove a domination theorem for operators between Banach ...
Dos obras de Sol89. Compacidades ahuecadas

García-Escudero, Daniel; Bardí i Milà, Berta (Universitat Politècnica de València, 2015-12-29)

[EN] The SOL89 office, formed by María González and Juanjo López de la Cruz, is where they have been carrying out their professional activity since the year 2000, once they had completed their studies at the School of ...
Local compactness in right bounded asymmetric normed spaces

Jonard Pérez,Natalia; Sánchez Pérez, Enrique Alfonso (Informa UK (National Inquiry Services Center), 2018)

[EN] We characterize the ¿nite dimensional asymmetric normed spaces which are right bounded and the relation of this property with the natural compactness properties of the unit ball, such as compactness and strong ...
Maximal Factorization of Operators Acting in Kothe-Bochner Spaces

Calabuig, J. M.; Fernández-Unzueta, M.; Galaz-Fontes, F.; Sánchez Pérez, Enrique Alfonso (Springer-Verlag, 2021-01)

[EN] Using some representation results for Kothe-Bochner spaces of vector valued functions by means of vector measures, we analyze the maximal extension for some classes of linear operators acting in these spaces. A ...
Mean ergodic and related properties of generalized Cesàro operators in BK-sequence spaces

Albanese, Angela A.; Bonet Solves, José Antonio; Ricker, Werner J. (Springer-Verlag, 2024-11-05)

[EN] Recent results concerning the linear dynamics and mean ergodicity of compact operators in Banach spaces, together with additional new results, are employed to investigate various spectral properties of generalized Ces ...
Measuring compactness of the urban landscape within a city territory for environmental capabilities: the case of 50 cities in eastern China

Shuang, Chen S.; Tong, Zhang; Guangyu, Li; Yue, Yan (Editorial Universitat Politècnica de València, 2018-04-20)

[EN] When a compact city is pursued as the strategy for urban sustainability the understanding of compactness is varied from the developed countries to the developing countries. In China the historical cities are characterized ...
On compactness and G-completeness in fuzzy metric spaces

Tirado Peláez, Pedro (University of Sistan and Baluchestan, 2012-11)

[EN] In [Fuzzy Sets and Systems 27 (1988) 385-389], M. Grabiec introduced a notion of completeness for fuzzy metric spaces (in the sense of Kramosil and Michalek) that successfully used to obtain a fuzzy version of Banach´s ...
Some compactness criteria in locally convex spaces

Monterde Pérez, Ignacio (Universitat Politècnica de València, 2011-11-22)

Several kinds of compactness are analysed. We also provide some results which allow to check compactness with a minimum of requirements.
Some properties of bornological convergences

Rodríguez López, Jesús; Sanchez Granero, Miguel Angel (Elsevier, 2011-01-01)

We study some basic properties of the so-called bornological convergences in the realm of quasi-uniform spaces. In particular, we revisit the results about when these convergences are topological by means of the use of ...
Spectral properties of generalized Cesaro operators in sequence spaces

Albanese, Angela A.; Bonet Solves, José Antonio; Ricker, Werner J. (Springer-Verlag, 2023-10)

[EN] The generalized Cesaro operators C-t, for t is an element of[0, 1], were first investigated in the 1980s. They act continuously in many classical Banach sequence spaces contained in C(N)0, such as l(p), c(0), c, bv(0), ...