Some results in the effective descriptive set theory
Hisao Tanaka · Publications of the Research Institute for Mathematical Sciences · 1967
Contents§0. Introduction.§1.Preliminaries.§2.Examples.§3.Non-denumerable Si-sets.§4.The measure of an arithmetical set.§5.The measure of a Si-sets and related problems.§6.nj-sets containing perfect subsets.§7.Concerning a basis result for the arithmetical sets.§8.On the Baire's theorem with respect to a monotone wellordered family of closed sets.