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pseudocircle

4-point finite topological space weakly homotopy-equivalent to the circle
Thing finite_topological_space Q7254653
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pseudocircle

Summary

pseudocircle is a finite topological space[1]. pseudocircle draws 11 Wikipedia views per month (finite_topological_space category, ranking #1 of 1).[2]

Key Facts

  • pseudocircle's instance of is recorded as finite topological space[3].
  • pseudocircle's instance of is recorded as sober space[4].
  • pseudocircle's Freebase ID is recorded as /m/09ckz1[5].
  • pseudocircle's defining formula is recorded as ({a,b,c,d},{{a,b,c,d},{a,b,c},{a,b,d},{a,b},{a},{b},\varnothing})[6].
  • pseudocircle's nLab ID is recorded as pseudocircle[7].
  • pseudocircle's Microsoft Academic ID is recorded as 2780010495[8].

Why It Matters

pseudocircle draws 11 Wikipedia views per month (finite_topological_space category, ranking #1 of 1).[2] pseudocircle has Wikipedia articles in 5 language editions, a strong signal of global cultural recognition.[9]

References

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

Direct Wikidata claims

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

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [9] ↑ . Wikidata sitelinks. 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). pseudocircle. Retrieved May 3, 2026, from https://4ort.xyz/entity/pseudocircle
MLA “pseudocircle.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/pseudocircle.
BibTeX @misc{4ortxyz_pseudocircle_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{pseudocircle}}, year = {2026}, url = {https://4ort.xyz/entity/pseudocircle}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): pseudocircle — https://4ort.xyz/entity/pseudocircle (retrieved 2026-05-03)

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