Enumerating Classes of Effective Quasi-Polish Spaces
Enumerating Classes of Effective Quasi-Polish Spaces
复制标题
枚举有效准波兰空间的类
DOI:
10.1007/978-3-031-08740-0_8
复制
发表时间:
2022
期刊:
影响因子:
--
通讯作者:
& V. Selivanov
中科院分区:
文献类型:
--
作者:
M. de Brecht;T. Kihara;& V. Selivanov
We discuss ideal presentations of effective quasi-Polish spaces and some of their subclasses. Based on this, we introduce and study natural numberings of these classes, in analogy with the numberings of classes of algebraic structures popular in computability theory. We estimate the complexity of (effective) homeomorphism w.r.t. these numberings, and of some natural index sets. In particular, we give precise characterizations of the complexity of certain classes related to separation axioms.