MATH 223D

Topics in Descriptive Set Theory

Mathematics · 4 units · Graduate courses (200-299)

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Classical and effective results on Borel and projective sets; infinite games of perfect information and principle of determinacy; consequences of determinacy, including periodicity, structure theory of pointclasses, and partition properties. Topics vary from year to year. May be repeated for credit with consent of instructor.

S/U or letter grading.

When it runs

Spring 2026
Spring 2027

Scheduled, not typical — from UCLA’s Schedule of Classes, which publishes Fall 2025 through Spring 2027 and nothing before it.

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Requisites

Official UCLA wording
Requisites: courses 220A, 220B.

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Requires

Everything that has to come before this course, not just the courses named in the requisite above.

MATH 223D

MATH 220AMathematical Logic
- MATH M114SIntroduction to Set Theory
  - MATH 110AAlgebra1 more beneath
  - MATH 131AAnalysis2 more beneath
  - PHILOS 135Introduction to Metalogic4 more beneath

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What this course is a requisite for, and what those courses lead to in turn.

No course in the catalog lists this as a requisite.