What does "pointclass" mean?

A collection of sets of points (ordinarily understood to be elements of some perfect Polish space), characterized by some sort of definability property.

Pointclass

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
A collection of sets of points (ordinarily understood to be elements of some perfect Polish space), characterized by some sort of definability property.

Etymology

From point + class.

Related phrases

polish space

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.