Integrability and non-integrability of periodic non-autonomous Lyness recurrences

A Cima, A Gasull, V Mañosa - Dynamical Systems, 2013 - Taylor & Francis
This paper studies non-autonomous Lyness-type recurrences of the form xn+ 2=(an+ xn+
1)/xn, where {an} is ak-periodic sequence of positive numbers with primitive period k. We …

ON PERIODIC SOLUTIONS OF 2-PERIODIC LYNESS'EQUATIONS

G Bastien, V Manosa, M Rogalski - International journal of …, 2013 - World Scientific
We study the existence of periodic solutions of the nonautonomous periodic Lyness'
recurrence un+ 2=(an+ un+ 1)/un, where {an} n is a cycle with positive values a, b and with …

Nonautonomous two-periodic Gumovski–Mira difference equations

A Cima, A Gasull, V Mañosa - International journal of bifurcation …, 2012 - World Scientific
We consider two types of nonautonomous two-periodic Gumovski–Mira difference
equations. We show that while the corresponding autonomous recurrences are conjugated …

[HTML][HTML] Integrability and algebraic entropy of k-periodic non-autonomous Lyness recurrences

A Cima, S Zafar - Journal of Mathematical Analysis and Applications, 2014 - Elsevier
This work deals with non-autonomous Lyness type recurrences of the form x n+ 2= a n+ x n+
1 xn, where {an} n is a k-periodic sequence of complex numbers with minimal period k. We …

A biquadratic system of two order one difference equations: periods, chaotic behavior of the associated dynamical system

G Bastien, M Rogalski - International Journal of Bifurcation and …, 2012 - World Scientific
We study in the biquadratic system of two order one difference equations for some values of
the parameters. We show that there is an invariant function G, and so that the orbit of a point …

Continua of periodic points for planar integrable rational maps

A Gasull Embid, M Llorens… - … journal of difference …, 2016 - upcommons.upc.edu
We present three alternative methodologies to find continua of periodic points with a
prescribed period for rational maps having rational first integrals. The first two have been …

[图书][B] Dynamical Classification of some birational maps of C2

S Zafar - 2015 - ddd.uab.cat
Dynamical Classication of some Birational Maps of C Page 1 Supervised by Dr. Anna
Cima Sundus Zafar Dynamical Classication of some Birational Maps of C 2 Page 2 …

[HTML][HTML] Zero entropy for some birational maps of C2

A Cima, S Zafar - Journal of Mathematical Analysis and Applications, 2019 - Elsevier
In this study, we consider a special case of the family of birational maps f: C 2→ C 2, which
were dynamically classified by [13]. We identify the zero entropy subfamilies of f and …

Level sets lemmas and unicity of critical point of invariants, tools for local stability and topological properties of dynamical systems

G Bastien, M Rogalski - Sarajevo Journal of Mathematics, 2012 - sjm.anubih.ba
We prove that the level curves of some differentiable functions of two variables with unique
critical point are diffeomorphic to the circle ${\mathbb T} $, and show how this result can be …

Dynamical Classification of a Family of Birational Maps of via Algebraic Entropy

S Zafar, A Cima - Qualitative theory of dynamical systems, 2019 - Springer
This work dynamically classifies a 9-parametric family of birational maps f: C^ 2 → C^ 2 f: C
2→ C 2. From the sequence of the degrees d_n dn of the iterates of f, we find the dynamical …