RT Journal Article T1 Indices of the iterates of R3-homeomorphisms at fixed pointswhich are isolated invariant sets A1 Le Calvez, Patrice A1 Romero Ruiz del Portal, Francisco A1 Salazar, J. M. AB Let U ⊂ R3 be an open set and f : U → f(U) ⊂ R3 be a homeomorphism. Let p ∈ U be a fixed point. It is known that if {p} is not an isolated invariant set, then the sequence of the fixedpoint indices of the iterates of f at p, (i(fn, p))n1, is, in general, unbounded. The main goalof this paper is to show that when {p} is an isolated invariant set, the sequence (i(fn, p))n1 is periodic. Conversely, we show that, for any periodic sequence of integers (In)n1 satisfying Dold’s necessary congruences, there exists an orientation-preserving homeomorphism such that i(fn, p) = In for every n 1. Finally we also present an application to the study of the local structure of the stable/unstable sets at p. PB Oxford University Press SN 0024-6107 YR 2010 FD 2010 LK https://hdl.handle.net/20.500.14352/42538 UL https://hdl.handle.net/20.500.14352/42538 LA eng NO I. K. Babenko and S. A. Bogatyi, ‘The behavior of the index of periodic points under iterations of a mapping’, Math. USSR Izv. 38 (1992) 1–26.R. F. Brown, The Lefschetz fixed point theorem (Scott Foreman Co. Glenview Illinois, London, 1971).S. N. Chow, J. Mallet-Paret and J. A. Yorke, ‘A periodic orbit index which is a bifurcation invariant’,Geometric dynamics, Lecture Notes in Mathematics 1007 (Springer,Berlin 1983) 109–131.A. Dold, ‘Fixed point indices of iterated maps’, Invent. Math. 74 (1983) 419–435.J. Franks and D. Richeson, ‘Shift equivalence and the Conley index’, Trans. Amer. Math. Soc. 7 (2000)3305–3322.G. Graff and P. Nowak-Przygodzki, ‘Fixed point indices of iterations of C1-maps in R3’, Discrete Contin. Dyn. Syst. 16 (2006) 843–856.J. H. Hubbard and R. W. Oberste-Vorth, ‘Linked solenoid mappings and the non-transversality locus invariant’,Indiana Univ. Math. J. 50 (2001) 553–566.J. Jezierski and W. Marzantowicz, ‘Homotopy methods in topological fixed and periodic points theory (Springer, Berlin, 2005).A. Katok and B. Hasselblatt, ‘Introduction to the modern theory of dynamical systems (Cambridge University Press, Cambridge, 1995).P. Le Calvez, ‘Dynamique des homeomorphismes du plan au voisinage d’un point fixe’, Ann. Sci. Ecole.Norm. Sup. (4) 36 (2003) 139–171.P. Le Calvez and J.C. Yoccoz, ‘Un theoreme d’indice pour les hom´eomorphismes du plan au voisinage d’un point fixe’, Ann. of Math. 146 (1997) 241–293.P. Le Calvez and J.C. Yoccoz, ‘Suite des indices de Lefschetz des it´er´es pour un domaine de Jordan qui est un bloc isolant’, Unpublished.A. Manning, ‘Topological entropy and the first homology group’, Dynamical systems, Lecture Notes in Mathematics 468 (Springer, Berlin, 1975) 185–190.S. Mardesic and J. Segal, Shape theory (North-Holland,Amsterdam, 1982).R. D. Nussbaum, ‘The fixed point index and some applications’, Seminaire de Mathematiques superieures (Les Presses de L’Universite de Montreal, Montreal, 1985).16. C. Pugh, ‘On the entropy conjecture’, Dynamical systems, Lecture Notes in Mathematics 468. (Springer, Berlin, 1975), 257–261.C. Robinson, ‘Dynamical systems. Stability, symbolic dynamics, and chaos’, Studies in Advanced Mathematics (CRC Press, Boca Raton, FL, 1995).F. R. Ruiz del Portal and J. M. Salazar, ‘Fixed point index of iterations of local homeomorphisms of the plane: a Conley-index approach’, Topology 41 (2002) 1199-1212.F. R. Ruiz del Portal and J. M. Salazar, ‘Indices of the iterates of R3-homeomorphisms at Lyapunov stable fixed points’, J. Differential Equations 244 (2008) 1141–1156.F. R. Ruiz del Portal and J. M. Salazar, ‘Realization of all Dold’s congruences with stability’, J.Differential Equations 249 (2010) 989–1013.M. Shub, A. Fathi and R. Langevin, Global stability of dynamical systems (Springer, New York, 1987).M. Shub and D. Sullivan, ‘A remark on the Lefschetz fixed point formula for differentiable maps’,Topology 13 (1974) 189–191.S. Smale, ‘Differentiable dynamical systems’, Bull. Amer. Math. Soc. 73 (1967) 747–817.E. Spanier, Algebraic topology, McGraw-Hill Series in Higher Mathematics (McGraw-Hill, New York,1966).R. M. Switzer, ‘Algebraic topology — homology and homotopy’, Grundlehren der Mathematischen Wissenschaften 212 (Springer, New York, 1975).P. Walters, An introduction to ergodic theory (Springer, Berlin, 1982).Y. Yomdin, ‘Volume growth and entropy’, Israel J. Math. 57 (1987) 285–300. NO Dedicated to Professor Jose M. Montesinos on the occasion of his 65th birthday NO MICINN NO ANR DS Docta Complutense RD 16 may 2024