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projective set

in descriptive set theory, a subset of a Polish space constructible by taking complements and projections of an analytic set
Thing general Q219448
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projective set

Summary

projective set ranks in the top 2% of general entities by monthly Wikipedia readership (21 views/month).[1]

Key Facts

  • projective set's subclass of is recorded as subset[2].
  • projective set's part of is recorded as list of properties of sets of reals[3].
  • projective set's part of is recorded as list of types of sets[4].
  • projective set's Freebase ID is recorded as /m/04k__0[5].
  • projective set's nLab ID is recorded as projective set[6].
  • projective set's Microsoft Academic ID is recorded as 156670172[7].
  • projective set's Encyclopedia of Mathematics article ID is recorded as Projective_set[8].
  • projective set's ScienceDirect topic ID is recorded as mathematics/projective-set[9].

Why It Matters

projective set ranks in the top 2% of general entities by monthly Wikipedia readership (21 views/month).[1] It has Wikipedia articles in 5 language editions, a strong signal of global cultural recognition.[10] It is known by 7 alternative names across languages and contexts.[11]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . wikidata.org.

Aggregate / graph-position facts

  1. [1] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [10] ↑ . Wikidata sitelinks. wikidata.org.
  3. [11] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). projective set. Retrieved April 10, 2026, from https://4ort.xyz/entity/projective-set
MLA “projective set.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/projective-set.
BibTeX @misc{4ortxyz_projective-set_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{projective set}}, year = {2026}, url = {https://4ort.xyz/entity/projective-set}, note = {Accessed: 2026-04-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): projective set — https://4ort.xyz/entity/projective-set (retrieved 2026-04-10)

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