Browsing Articles publicats (Matemàtica) by Title
Now showing items 239-246 of 246
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Vertex‐transitive graphs that remain connected after failure of a vertex and its neighbors
(Wiley, 2011)A d-regular graph is said to be superconnected if any disconnecting subset with cardinality at most d is formed by the neighbors of some vertex. A superconnected graph that remains connected after the failure of a vertex ... -
Volcanoes of l-isogenies of elliptic curves over finite fields: the case l=3
(Universitat Autònoma de Barcelona. Departament de Matemàtiques, 2007)This paper is devoted to the study of the volcanoes of l-isogenies of elliptic curves over a finite field, focusing on their height as well as on the location of curves across its different levels. The core of the paper ... -
Voltammetric currents for any ligand-to-metal concentration ratio in fully labile metal-macromolecular complexation. Easy computations, analytical properties of the currents and graphical method to estimate the stability constant
(Elsevier, 1999)In order to enable a wider use of voltammetric methods in speciation analysis, it is convenient not to be restricted by ligand excess conditions. This work assumes labile ideal complexation of a metal ion by a ligand, ... -
Voltammetric lability of metal complexes at spherical micorelectrodes with various radii
(Elsevier, 2001)The size of a microelectrode can have a dramatic impact on the relative importance of the diffusional and kinetic contributions to the voltammetric current of an electroactive metal ion in a complexing medium. Decreasing ... -
Voltammetric lability of multiligand complexes: the case of ML2
(Elsevier, 2004)The voltammetric lability of a complex system, where a metal ion M and a ligand L form the species ML and ML2, is examined. Together with the rigorous numerical simulation of the problem, two limiting cases are analysed ... -
Weierstrass integrability in Liénard differential systems
(Elsevier, 2011)In this work we study the Liénard differential systems that admit a Weierstrass first integral or a Weierstrass inverse integrating factor -
Weierstrass integrability of differential equations
(Elsevier, 2010)The integrability problem consists in finding the class of functions a first integral of a given planar polynomial differential system must belong to. We recall the characterization of systems which admit an elementary or ... -
Zero-Hopf polynomial centers of third-order differential equations
(Springer Science+Business Media New York, 2016-11-15)We study the 3-dimensional center problem at the zero-Hopf singularity in some families of polynomial vector fields arising from third-order polynomial differential equations. After proving some general properties we check ...