Analytical
Summary
The analytical hierarchy is a hierarchy of subsets of an effective Polish space (such as ω). They are definable by a second-order formula without parameters, and an analytical set is a set in the analytical hierarchy. (This is not the same as an analytic set)
Further reading
- Wikipedia, page 43580500, revision 1360947732, Glossary of set theory, section A. adopted
About this page
| Tag | SSK50EMH7J |
|---|---|
| URI | m2://SSK50EMH7J |
| Kind | concept |
| Writing | W1 stated |
| Changed | 4 November 2026 |
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What this page needs for W2
- edge defines in: at least one definition (0 of 1)
- edge instance_of in: at least two examples (0 of 2)
- edge not_instance_of in: at least one non-example (0 of 1)
- edge specializes both: the more general notions and the special cases (0 of 1)
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