A dichotomy theorem for mono-unary algebras
Tom 163 / 2000
Fundamenta Mathematicae 163 (2000), 25-37
DOI: 10.4064/fm-163-1-25-37
Streszczenie
We study the isomorphism relation of invariant Borel classes of countable mono-unary algebras and prove a strong dichotomy theorem.
