KnowraDescriptive set theoryLinked fromLinked fromThe 9 pages that link to Descriptive set theory, each with the reason it gives.All 9Related 3Narrower topic 6Mathematical logicRelated: It shows how logical definability classifies mathematically complex sets.Axiom of determinacyRelated: The axiom became a central hypothesis in the study of definable payoff sets.Nikolai LuzinNarrower topic: Luzin founded the Moscow school that made this field a major area of research.Arithmetical hierarchyNarrower topic: Its broader hierarchies extend the classification of definability beyond computable predicates.Large cardinalNarrower topic: Large cardinals establish regularity and determinacy properties for definable sets of reals.CodeNarrower topic: Codes let this field study countable structures through sets of reals.Post's theoremNarrower topic: Its Borel and projective hierarchies classify definability in a different setting.Zero-dimensional spaceNarrower topic: Zero-dimensional Polish spaces serve as standard domains for coding and classification.Lindström's theoremRelated: It offers a neighboring framework for comparing the expressive power of logical languages.