New approach to entropy of countable group actions

 There exists an astonishingly simple formula for the dynamical entropy of a process
(measure-preserving transformation with a partition),which can be easily extended
to actions of any countable group. This formula coincides with the standard one up
to amenable groups. I will discuss its applicability to other groups and, exploring
another direction, to topological entropy.

Anhang	Größe
[4]Downarowicz_1706.pdf [5]	251.17 KB