Abstract:
Countable topological Markov chains (TMC) ((non-transitive, in general) are considered.
It is assumed that any power of the transition matrix of TMC has a finite trace,
so the dynamical Artin-Mazur zeta function of TMC is well defined. It is also assumed
that the radius of convergence for zeta-function of subsystems of TMC which correspond
to submatrices with indexes sufficiently big is less than the
radius $r(A)$ for zeta fuction
of the initial TMC with matrix $A$. These conditions are natural because they are satisfied
for countable TMC being symbolic models of one-dimensional piecewise monotone maps with
positive topological entropy. We show in the paper that under these condition, several
invariants of the entropy type (such as the radius of convergence $r(A)$, logarithm
of the entropy $-\log h_{top}(A)$ and some others) actually coincide.