Classes of Polish Spaces Under Effective Borel Isomorphism (Memoirs of the American Mathematical Society) Book PDF, ePub eBook

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Book Descriptions:
The author studies the equivalence classes under $Delta^1_1$ isomorphism, otherwise effective Borel isomorphism, between complete separable metric spaces which admit a recursive presentation and he shows the existence of strictly increasing and strictly decreasing sequences as well as of infinite antichains under the natural notion of $Delta^1_1$-reduction, as opposed to the non-effective case, where only two such classes exist, the one of the Baire space and the one of the naturals.

Classes of Polish Spaces Under Effective Borel Isomorphism (Memoirs of the American Mathematical Society) by Vassilios Gregoriades

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