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The numbers of periodic orbits hidden at fixed points of n-dimensional holomorphic mappings

Published online by Cambridge University Press:  16 September 2008

GUANG YUAN ZHANG
GUANG YUAN ZHANG*
Affiliation:
Department of Mathematical Sciences, Tsinghua University, Beijing 100084, People’s Republic of China (email: gyzhang@math.tsinghua.edu.cn)
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Abstract

Let M be a positive integer and let f be a holomorphic mapping from a ball Δn={x∈ℂn:∣x∣<δ} into ℂn such that the origin 0 is an isolated fixed point of both f and fM, the Mth iteration of f. Then one can define the number 𝒪M(f,0), interpreted as the number of periodic orbits of f with period M that are hidden at the fixed point 0. For an n×n matrix A whose eigenvalues are all the same primitive Mth root of unity, we give a sufficient and necessary condition on A such that for any holomorphic mapping f:Δn→ℂn with f(0)=0 and Df(0)=A,if 0is an isolated fixed point of the Mth iteration fM ,then 𝒪M (f,0)≥2.

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Type
Research Article
Information
Ergodic Theory and Dynamical Systems , Volume 28 , Issue 6 , December 2008 , pp. 1973 - 1989
Copyright
Copyright © 2008 Cambridge University Press

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