We give sufficient conditions for a diffeomorphism in the plane to be analytically conjugate to a shift in a complex neighborhood of a segment of an invariant curve. For a family of functions close to the identity uniform estimates are established. As a consequence an exponential upper estimate for splitting of separatrices is established for diffeomorphisms of the plane close to the identity. The constant in the exponent is related to the width of the analyticity domain of the limit flow separatrix. Unlike the previous works the cases of non-area-preserving maps and parabolic fixed points are included.
@article{bwmeta1.element.bwnjournal-article-zmv24i2p127bwm, author = {Vassili\u\i\ Gelfreich}, title = {Conjugation to a shift and the splitting of invariant manifolds}, journal = {Applicationes Mathematicae}, volume = {24}, year = {1997}, pages = {127-140}, zbl = {0866.34041}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-zmv24i2p127bwm} }
Gelfreich, Vassiliĭ. Conjugation to a shift and the splitting of invariant manifolds. Applicationes Mathematicae, Tome 24 (1997) pp. 127-140. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-zmv24i2p127bwm/
[000] [Fon95] E. Fontich, Rapidly forced planar vector fields and splitting of separatrices, J. Differential Equations 119 (1995), 310-335. | Zbl 0827.34041
[001] [FS90] E. Fontich and C. Simó, The splitting of separatrices for analytic diffeomorphisms, Ergodic. Theory Dynam. Systems 10 (1990), 295-318. | Zbl 0706.58061
[002] [Laz84] V. F. Lazutkin, Splitting of separatrices for Chirikov's standard map, VINITI no. 6372/84, 1984 (in Russian).
[003] [Laz87] V. F. Lazutkin, Separatrices splitting for a standard family of the area-preserving maps, in: M. Sh. Birman (ed.), Wave Propagation. Scattering Theory, Topics in Math. Phys. 12, Leningrad State University, 1987, 32-41 (in Russian).
[004] [Laz91] V. F. Lazutkin, Exponential splitting of separatrices and an analytical integral for the semistandard map, preprint, Université Paris VII, 1991.
[005] [Nei84] A. I. Neishtadt, The separation of motion in systems with rapidly rotating phase, Prikl. Mat. Mekh. 48 (1984), 197-204, (in Russian).