Home › Entities › complexity_class › NP-hard

NP-hard

complexity class
Thing complexity_class Q1137554
Press Enter · cited answer in seconds

NP-hard

Summary

NP-hard is a complexity class[1]. NP-hard ranks in the top 2% of complexity_class entities by monthly Wikipedia readership (839 views/month).[2]

Key Facts

  • NP-hard's instance of is recorded as complexity class[3].
  • NP-hard's subclass of is recorded as computational problem[4].
  • NP-hard's has part is recorded as NP-complete[5].
  • NP-hard's has part is recorded as NP-equivalent[6].
  • NP-hard's Freebase ID is recorded as /m/0f86q[7].
  • NP-hard's topic's main category is recorded as Category:NP-hard problems[8].
  • NP-hard's Encyclopædia Britannica Online ID is recorded as topic/NP-hard-problem[9].
  • NP-hard's Stack Exchange tag is recorded as https://cs.stackexchange.com/tags/np-hard[10].
  • NP-hard's Stack Exchange tag is recorded as https://stackoverflow.com/tags/np-hard[11].
  • NP-hard's MathWorld ID is recorded as NP-HardProblem[12].
  • NP-hard's Quora topic ID is recorded as NP-Hard-1[13].
  • NP-hard's maintained by WikiProject is recorded as WikiProject Mathematics[14].
  • NP-hard's Encyclopedia of China is recorded as 322923[15].

Why It Matters

NP-hard ranks in the top 2% of complexity_class entities by monthly Wikipedia readership (839 views/month).[2] NP-hard has Wikipedia articles in 19 language editions, a strong signal of global cultural recognition.[16] NP-hard is known by 19 alternative names across languages and contexts.[17]

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] ↑ . Freebase Data Dumps. wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . wikidata.org.
  11. [13] ↑ . Quora. wikidata.org.
  12. [14] ↑ . wikidata.org.
  13. [15] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [16] ↑ . Wikidata sitelinks. wikidata.org.
  3. [17] ↑ . 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). NP-hard. Retrieved May 3, 2026, from https://4ort.xyz/entity/np-hard
MLA “NP-hard.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/np-hard.
BibTeX @misc{4ortxyz_np-hard_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{NP-hard}}, year = {2026}, url = {https://4ort.xyz/entity/np-hard}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): NP-hard — https://4ort.xyz/entity/np-hard (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/np-hard · Last refreshed: