TY - JOUR
T1 - Stability of symbolic embeddings for difference equations and their multidimensional perturbations
AU - Chen, Hung Ju
AU - Li, Ming-Chia
PY - 2015/2/1
Y1 - 2015/2/1
N2 - In this paper, we study complexity of solutions of a high-dimensional difference equation of the formΦ(xi-m,...,xi-1,xi,xi+1,...,xi+n)=0,i∈Z, where Φ is a C1 function from (Rℓ)m+n+1 to Rℓ. Our main result provides a sufficient condition for any sufficiently small C1 perturbation of Φ to have symbolic embedding, that is, to possess a closed set of solutions Λ that is invariant under the shift map, such that the restriction of the shift map to Λ is topologically conjugate to a subshift of finite type. The sufficient condition can be easily verified when Φ depends on few variables, including the logistic and Hénon families. To prove the result, we establish a global version of the implicit function theorem for perturbed equations. The proof of the main result is based on the Brouwer fixed point theorem, and the proof of the global implicit function theorem is based on the contraction mapping principle and other ingredients. Our novel approach extends results in [2,3,8,15,21].
AB - In this paper, we study complexity of solutions of a high-dimensional difference equation of the formΦ(xi-m,...,xi-1,xi,xi+1,...,xi+n)=0,i∈Z, where Φ is a C1 function from (Rℓ)m+n+1 to Rℓ. Our main result provides a sufficient condition for any sufficiently small C1 perturbation of Φ to have symbolic embedding, that is, to possess a closed set of solutions Λ that is invariant under the shift map, such that the restriction of the shift map to Λ is topologically conjugate to a subshift of finite type. The sufficient condition can be easily verified when Φ depends on few variables, including the logistic and Hénon families. To prove the result, we establish a global version of the implicit function theorem for perturbed equations. The proof of the main result is based on the Brouwer fixed point theorem, and the proof of the global implicit function theorem is based on the contraction mapping principle and other ingredients. Our novel approach extends results in [2,3,8,15,21].
KW - Difference equation
KW - Implicit function theorem
KW - Multidimensional perturbation
KW - Symbolic embedding
UR - http://www.scopus.com/inward/record.url?scp=84919642997&partnerID=8YFLogxK
U2 - 10.1016/j.jde.2014.10.008
DO - 10.1016/j.jde.2014.10.008
M3 - Article
AN - SCOPUS:84919642997
VL - 258
SP - 906
EP - 918
JO - Journal of Differential Equations
JF - Journal of Differential Equations
SN - 0022-0396
IS - 3
ER -