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Metric fixed-point theory lies in the intersection of three main subjects: topology, functional analysis, and applied mathematics. The first fixed-point theorem, also known as contraction mapping principle, was abstracted by Banach from the papers of Liouville and Picard, in which certain differential equations were solved by using the method of successive approximation. In other words, fixed-point theory developed from applied mathematics and has developed in functional analysis and topology. Fixed-point theory is a dynamic research subject that has never lost the attention of researchers, as it is very open to development both in theoretical and practical fields. In this Special Issue, amo...
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This book is an outcome of two Conferences on Ulam Type Stability (CUTS) organized in 2016 (July 4-9, Cluj-Napoca, Romania) and in 2018 (October 8-13, 2018, Timisoara, Romania). It presents up-to-date insightful perspective and very resent research results on Ulam type stability of various classes of linear and nonlinear operators; in particular on the stability of many functional equations in a single and several variables (also in the lattice environments, Orlicz spaces, quasi-b-Banach spaces, and 2-Banach spaces) and some orthogonality relations (e.g., of Birkhoff–James). A variety of approaches are presented, but a particular emphasis is given to that of fixed points, with some new fix...
Paul Bloom este un renumit cercetător în domeniul științelor cognitive. A publicat numeroase studii în care a încercat să afle cum funcționează moralitatea de la stadiul copilăriei până la maturitate. În această carte, autorul demonstrează că empatia este o piedică în calea moralității. Pentru studiul de față se bazează pe exemple istorice, pe exemple personale, pe studiile altor colegi psihologi, astfel încât reușește să construiască o imagine complexă a felului în care empatia te poate influența în mod negativ. Empatia ne motivează să fim mai buni. Empatia este resortul unei vieți altruiste. Empatia ne inspiră să dăruim, să ne punem în pielea celorl...
This book provides a detailed study of recent results in metric fixed point theory and presents several applications in nonlinear analysis, including matrix equations, integral equations and polynomial approximations. Each chapter is accompanied by basic definitions, mathematical preliminaries and proof of the main results. Divided into ten chapters, it discusses topics such as the Banach contraction principle and its converse; Ran-Reurings fixed point theorem with applications; the existence of fixed points for the class of α-ψ contractive mappings with applications to quadratic integral equations; recent results on fixed point theory for cyclic mappings with applications to the study of ...
Phase morphology in multicomponent polymer-based systems represents the main physical characteristic that allows for control of the material design and implicitly the development of new plastics. Emphasizing properties of these promising new materials in both solution and solid phase, this book describes the preparation, processing, properties, and practical implications of advanced multiphase systems from macro to nanoscales. It covers a wide range of systems including copolymers, polymer blends, polymer composites, gels, interpenetrating polymers, and layered polymer/metal structures, describing aspects of polymer science, engineering, and technology. The book analyzes experimental and the...
Vei afla de ce libertatea spiritului este cea mai importantă nevoie umană. — Kirkus Reviews Alan Watts vorbește despre întoarcerea la rădăcini și contopirea cu natura, pentru ca de acolo să începi să te regăsești. — The Buddhist Review De ce oamenii acceptă viața, dar nu știu s-o iubească, privind înfricoșați spre capătul ei? De ce căutarea fericirii duce la stări de tensiune și anxietate? De ce omenirea și-a pierdut sensul și de ce prea puțini simt că și-au găsit calea? De ce în suflet se dă un război din care cei mai mulți ies învinși? De multe ori ți-e chiar frică să-ți pui de unul singur aceste întrebări. Alan Watts îți oferă câteva răspu...