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A device is provided for locking or latching two objects together including a housing, a pair of spring loaded pins within said housing, a keeper in said housing mounted for pivotal movement about a… (More)
On donne une borne superieure sur le defaut en semicontinuite superieure des entropies topologiques et metriques d'une auto-application C r d'une variete C r , r>1
LET M be a compact C” manifold without boundary. and let Dir(M) denote the space of C’diffeomorphisms of I that is, f’(p) = p but fk(p) # p for 0 < k < V. We say that p is a sink if each eigenvalue… (More)
1. One of the most important and beautiful subjects in the theory of dynamical systems concerns the orbit structure near an elliptic periodic point of an area preserving diffeomorphism f of the two… (More)
An inequality is given relating the topological entropy of a smooth map to growth rates of the volumes of iterates of smooth submanifolds. Applications to the entropy of algebraic maps are given.
We study a method for estimating the topological entropy of a smooth dynamical system. Our method is based on estimating the logarithmic growth rates of suitably chosen curves in the system. We… (More)