The study of computable structures and equivalence relations lies at the intersection of computability theory, algebra and logic, and provides essential insights into the classification and decision ...

We investigate diagonal actions of Polish groups and the related intersection operator on closed subgroups of the acting group. The Borelness of the diagonal orbit equivalence relation is ...

This is a preview. Log in through your library . Abstract This paper examines the outcome of the fuzzy equivalence clustering with an application to the upland grasslands of Northern Snowdonia, Wales.