Guirao Sánchez, Antonio José; Montesinos Santalucia, Vicente; Zizler, Vaclav(Elsevier, 2017)
[EN] There is a maybe unexpected connection between three apparently unrelated notions concerning a given w*-dense subspace Y of the dual X* of a Banach space X: (i) The norming character of Y, (ii) the fact that (Y, w*) ...
Bonet Solves, José Antonio; Domanski, Pawel(Springer Verlag (Germany), 2011-09)
We characterize those composition operators defined on spaces of holomorphic functions of several variables which are power bounded, i.e. the orbits of all the elements are bounded. This condition is equivalent to the ...
Alegre Gil, Maria Carmen; Romaguera Bonilla, Salvador(Elsevier, 2017)
[EN] In a recent paper Fang (2015) [1], J.X. Fang generalized a crucial fixed point theorem for probabilistic phi-contractions on complete Menger spaces due to Jachymski (2010) [3]. In this note we show that actually Fang ...
Sánchez Ruiz, Luis Manuel; Datta, Sanjib Kumar; Biswas, Tanmay; Ghosh, Chinmay(Canadian Center of Science and Education (CCSE), 2016-10)
[EN] Relative order of functions measures specifically how different in growth two given functions are which helps to settle the
exact physical state of a system. In this paper for any two positive integers p and q, we ...
[EN] We treat some questions related to supercyclicity of continuous linear operators when acting in locally convex spaces. We extend results of Ansari and Bourdon and consider doubly power bounded operators in this general ...
Guirao Sánchez, Antonio José; Montesinos Santalucia, Vicente(Springer-Verlag, 2015)
[EN] By using a result in Kirk (Pac J Math 45:543 554, 1973), we show that there are separable Banach spaces such that their dual spaces, endowed with the Mackey-star topology, are not analytic. This solves a question ...
[EN] In this note, we give an easy algorithm to construct the rational canonical form of a square matrix or an endomorphism h of a finite dimensional vector space which does not depend on either the structure theorem for ...
Bonet Solves, José Antonio; DOMANSKI, PAWEL(Springer-Verlag, 2017-01)
[EN] In this paper the spectrum of composition operators on the space of real analytic functions is investigated. In some cases it is completely determined while in some other cases it is only estimated.
[EN] We prove that under some mild conditions on the symbol phi, the spectrum of the corresponding composition operator C-phi on the Korenblum type spaces A_(-alpha) and A(+)(-alpha) contains a closed ball of positive radius.
Carando, D.; Mazzitelli, M.; Sevilla Peris, Pablo(Pleiades Publishing, 2021-07)
[EN] We give a self-contained treatment of symmetric Banach sequence spaces and some of their natural properties. We are particularly interested in the symmetry of the norm and the existence of symmetric linear functionals. ...
Lopez Orti, Jose Antonio; Marco Castillo, Francisco José; Martínez Uso, María José(Hindawi Publishing Corporation, 2014)
The orbital motion around a central body is an interesting problem that involves the theory of artificial satellites and the planetary theories in the solar system. Nevertheless some difficult situations appear while ...
[EN] In this paper we introduce the variable exponent Hormander spaces and we study some of their properties. In particular, it is shown that is isomorphic to (Omega open set in and the Hardy-Littlewood maximal operator M ...
[EN] In this paper, we propose a general bi-parametric family of sixth order iterative methods to solve systems of nonlinear equations. The presented scheme contains some well known existing methods as special cases. The ...
[EN] The core idea behind sectorization of water supply networks (WSNs) is to establish areas partially isolated from the rest of the network to improve operational control. Besides the benefits associated to sectorization, ...
García Manrique, Juan Antonio; Hoto, Rene; Gascón Martínez, María Llanos; Andrés de la Esperanza, Francisco Javier(SAGE Publications (UK and US), 2014-04)
In this work, a structural reactive injection moulding process using reactive anionic
polyamide 6 (APA-6) is studied. Semi-empirical equations for the prediction of the
APA-6 reaction kinetics and an advection equation ...
García Mora, María Belén; Santamaria Navarro, Cristina; Rubio Navarro, Gregorio(MDPI AG, 2020-12)
[EN] Stochastic processes are useful and important for modeling the evolution of processes that take different states over time, a situation frequently found in fields such as medical research and engineering. In a previous ...
Corberan, A.; Sanchís Llopis, José María(Elsevier, 1994)
[EN] In this paper we study the polyhedron associated with the Rural Postman Problem (RPP). Because the RPP is NP-hard, we cannot expect to find a complete description of the rural postman polyhedron of a general graph, ...
[EN] In this paper we go further with the study initiated by Behle, Krebs and Reifferscheid (in: Proceedings CAI 2011, Lecture Notes in Computer Science, vol 6742, pp 97-114, 2011), who gave an Eilenberg-type theorem for ...
Acedo Rodríguez, Luis; Piqueras, P.; Moraño Fernández, José Antonio(Elsevier, 2018)
[EN] In the last decades there have been an increasing interest in improving the accuracy of spacecraft navigation and trajectory data. In the course of this plan some anomalies have been found that cannot, in principle, ...