We extend some recent results about bounded invariant equivalence relations and invariant subgroups of definable groups: we show that type-definability and smoothness are equivalent conditions in a ...
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 ...
Proceedings of the American Mathematical Society, Vol. 126, No. 11 (Nov., 1998), pp. 3361-3370 (10 pages) We introduce a notion of quasinormality for a nested pair ${\cal S}\subset {\cal R}$ of ...
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