Some properties of the k-dimensional Lyness' map

Anna Cima, Armengol Gasull, Víctor Mãosa

Research output: Contribution to journalArticleResearchpeer-review

8 Citations (Scopus)


This paper is devoted to study some properties of the k-dimensional Lyness' map F(x1, ..., xk) = (x2, ..., xk, (a + ∑ki=2xi)/x1). Our main result presents a rational vector field that gives a Lie symmetry for F. This vector field is used, for k ≤ 5, to give information about the nature of the invariant sets under F. When k is odd, we also present a new (as far as we know) first integral for F○F which allows us to deduce in a very simple way several properties of the dynamical system generated by F. In particular for this case we prove that, except on a given codimension one algebraic set, none of the positive initial conditions can be a periodic point of odd period. © 2008 IOP Publishing Ltd.
Original languageEnglish
Article number285205
JournalJournal of Physics A: Mathematical and Theoretical
Publication statusPublished - 18 Jul 2008


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