Exploració per tema "Difference equations"
Ara es mostren els items 1-20 de 33
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A presentation on periodic solutions of 2-periodic Lyness difference equations
(2012-07-27)
Presentació
Accés obert -
Asymptotic stability for block triangular maps
(2022-06)
Article
Accés obertWe prove a result concerning the asymptotic stability and the basin of attraction of fixed points for block triangular maps. This result is applied to some families of discrete dynamical systems and several types of ... -
Backlund transformations on coadjoint orbits of the loop algebra gl(n)
(2003)
Article
Accés obertThere is a wide class of integrable Hamiltonian systems on finite-dimensional coadjoint orbits of the loop algebra ˜ gl(r) which are represented by r × r Lax equations with a rational spectral parameter.A reduced complex ... -
Basin of attraction of triangular maps with applications
(2013-07-25)
Report de recerca
Accés obertWe consider some planar triangular maps. These maps preserve certain fibration of the plane. We assume that there exists an invariant attracting fiber and we study the limit dynamics of those points in the basin of attraction ... -
Basin of attraction of triangular maps with applications
(2014-03)
Article
Accés obertWe consider planar triangular maps that preserve certain fibration of the plane. We assume that there exists an invariant attracting fiber and we study the limit dynamics of those points in the basin of attraction of ... -
Bifurcation of 2-periodic orbits from non-hyperbolic fixed points
(2017-07-21)
Report de recerca
Accés obertWe introduce the concept of 2-cyclicity for families of one-dimensional maps with a non-hyperbolic fixed point by analogy to the cyclicity for families of planar vector fields with a weak focus. This new concept is useful ... -
Bifurcation of 2-periodic orbits from non-hyperbolic fixed points
(2018-01)
Article
Accés obertWe introduce the concept of 2-cyclicity for families of one-dimensional maps with a non-hyperbolic fixed point by analogy to the cyclicity for families of planar vector fields with a weak focus. This new concept is useful ... -
Combinatorial recurrences and linear difference equations
(2016)
Text en actes de congrés
Accés restringit per política de l'editorialIn this work we introduce the triangular arrays of depth greater than 1 given by linear recurrences, that generalize some well-known recurrences that appear in enumerative combinatorics. In particular, we focussed on ... -
Combinatorial recurrences and linear difference equations
(2016-10-17)
Article
Accés obertIn this work we introduce the triangular arrays of depth greater than 1 given by linear recurrences, that generalize some well known recurrences that appear in enumerative combinatorics. In particular, we focussed on ... -
Differential equations
(Springer, 2022)
Capítol de llibre
Accés restringit per política de l'editorialThe Encyclopedia of Mathematical Geosciences is a complete and authoritative reference work. It provides concise explanation on each term that is related to Mathematical Geosciences. Over 300 international scientists, each ... -
eXtended hybridizable discontinuous Galerkin (X-HDG) for void and bimaterial problems
(Springer, 2016)
Capítol de llibre
Accés restringit per política de l'editorialThis volume of the SEMA SIMAI Springer Series brings together selected contributions presented at the international conference “eXtended Discretization MethodS” (X-DMS), held during September 2015 in Ferrara, Italy. The ... -
Floquet theory for second order linear homogeneous difference equations
(2015-11-05)
Article
Accés obertIn this paper we provide a version of the Floquet’s theorem to be applied to any second order difference equations with quasi-periodic coefficients. To do this we extend to second order linear difference equations with ... -
Gramáticas discriminantes y funciones discriminantes lineales generalizadas
(Universitat Politècnica de Catalunya. Centre de Càlcul, 1989)
Article
Accés obertLas Gramáticas Discriminantes constituyen una aproximación para la clasificación de frases generadas por Gramáticas cuando la presencia de ruidos y distorsiones hace difícil la aplicación de las Técnicas usuales de Análisis ... -
Hopf and Neimark-Sacker bifurcations: applications to discrete-time hypercycles with functional shifts
(Universitat Politècnica de Catalunya, 2021-10)
Projecte Final de Màster Oficial
Accés obertHypercycles are cyclic catalytic sets of replicating macromolecules, where each one of the species catalyzes the replication of the next species of the set. This system has been widely studied within the framework of origins ... -
On 2- and 3-periodic Lyness difference equations
(2011-06-09)
Article
Accés obertWe describe the sequences {xn}n given by the non-autonomous second-order Lyness difference equations xnþ2 ¼ ðan þ xnþ1Þ=xn, where {an}n is either a 2-periodic or a 3- periodic sequence of positive values and the initial ... -
On periodic solutions of 2-periodic Lyness difference equations
(2012-01-04)
Altres
Accés obertWe study the existence of periodic solutions of the non--autonomous periodic Lyness' recurrence u_{n+2}=(a_n+u_{n+1})/u_n, where {a_n} is a cycle with positive values a,b and with positive initial conditions. It is known ... -
On periodic solutions of 2-periodic Lyness' equations
(2013-04)
Article
Accés obertWe study the existence of periodic solutions of the nonautonomous periodic Lyness' recurrenceun+2 = (an + un+1)/un, where {an}n is a cycle with positive values a, b and with positive initial conditions. It is known that ... -
On some rational piecewise linear rotations
(Taylor & Francis Group, 2023-09-26)
Article
Accés restringit per política de l'editorialWe study the dynamics of the piecewise planar rotations F¿(z)=¿(z-H(z)), with z¿C , H(z)=1 if Im(z)=0, H(z)=-1 if Im(z)<0, and ¿=eia¿C , being a a rational multiple of p. Our main results establish the dynamics in the so ... -
On some rational piecewise linear rotations
(2023-06-30)
Report de recerca
Accés obertWe study the dynamics of the piecewise planar rotations $F_{\lambda}(z)=\lambda (z-H(z)), $ with $z\in\C$, $H(z)=1$ if $\mathrm{Im}(z)\ge0,$ $H(z)=-1$ if $\mathrm{Im}(z)<0,$ and $\lambda=\mathrm{e}^{i \alpha} \in\C$, being ... -
On the accumulation points of non-periodic orbits of a difference equation of fourth order
(2023-06-22)
Report de recerca
Accés obertIn this paper, we are interested in analyzing the dynamics of the fourth-order difference equation x_{n+4}=max{x_{n+3},x_{n+2},x_{n+1},0}-x_n, with arbitrary real initial conditions. We fully determine the accumulation ...
