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non-empty set

set with at least one element
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non-empty set

Summary

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

Key Facts

  • non-empty set's subclass of is recorded as set[2].
  • non-empty set's said to be the same as is recorded as inhabited set[3].
  • non-empty set's opposite of is recorded as empty set[4].
  • non-empty set's defining formula is recorded as M\neq\emptyset[5].
  • non-empty set's Google Knowledge Graph ID is recorded as /g/155pcl5s[6].
  • non-empty set's MathWorld ID is recorded as NonemptySet[7].
  • non-empty set's maintained by WikiProject is recorded as WikiProject Mathematics[8].
  • non-empty set's in defining formula is recorded as M[9].
  • non-empty set's in defining formula is recorded as \emptyset[10].

Why It Matters

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

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.
  9. [10] ↑ . wikidata.org.

Aggregate / graph-position facts

  1. [1] ↑ . Wikimedia Foundation. dumps.wikimedia.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). non-empty set. Retrieved April 10, 2026, from https://4ort.xyz/entity/non-empty-set
MLA “non-empty set.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/non-empty-set.
BibTeX @misc{4ortxyz_non-empty-set_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{non-empty set}}, year = {2026}, url = {https://4ort.xyz/entity/non-empty-set}, note = {Accessed: 2026-04-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): non-empty set — https://4ort.xyz/entity/non-empty-set (retrieved 2026-04-10)

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