Аннотация:
Let G be an infinite countable discrete amenable group. For any G-action on a compact metric space (X,ρ), it turns out that if the action has positive topological entropy, then for any sequence {si}+∞i=1 with pairwise distinct elements in G there exists a Cantor subset K of X which is Li–Yorke chaotic along this sequence, that is, for any two distinct points x,y∈K, one has
lim supi→+∞ρ(six,siy)>0,andlim infi→+∞ρ(six,siy)=0.
Ключевые слова и фразы:
Li–Yorke chaos, topological entropy, measure-theoretic entropy, amenable group action.