Syllabus
1. Analytic sets and trees: Suslin sets and Suslin operation, Suslin operation and space of trees, Luzin-Sierpinsky index and coanalytic norms, Luzin separation theorems and principle of reduction. 2.
Measurable uniformizations and selections: Kuratowski, Ryll-Nardzewski selection theorem, Jankov-von Neumann uniformization theorem, Michael selection theorem, projections and uniformizations of sets with large sections (in the sense of measure or category), projections and uniformizations of sets with small sections (countable, compact).
Annotation
Advanced topics in the clasical descriptive set theorey. Continuation of NMMA433.
Recommended for master students of mathematical analysis.