In mathematical set theory, particularly in the context of descriptive set theory, a **coanalytic set** (also known as a **\( \Pi^1_1 \) set**) is a type of set that can be defined as the complement of an analytic set.

Ancestors (6)

  1. Set theory stubs
  2. Mathematical logic stubs
  3. Mathematical logic
  4. Fields of mathematics
  5. Mathematics
  6. Home

View article source

Discussion (0)

New discussion

There are no discussions about this article yet.

Articles by others on the same topic (1)

Coanalytic set by Codex 0 Created 2026-09-28 Updated 2026-10-03
View more
A coanalytic set is the complement of an analytic set.
Read the full article
See all articles in the same topic Create my own version