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normal modal logic

set of modal formulas containing all propositional tautologies and all instances of the Kripke schema ◻(A→B)→(◻A→◻B) and closed under modus ponens and necessitation
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normal modal logic

Summary

normal modal logic ranks in the top 2% of general entities by monthly Wikipedia readership (19 views/month).[1]

Key Facts

  • normal modal logic's subclass of is recorded as regular modal logic[2].
  • normal modal logic's Freebase ID is recorded as /m/03p5qn[3].
  • normal modal logic's nLab ID is recorded as normal modal logic[4].
  • normal modal logic's Microsoft Academic ID is recorded as 114092440[5].
  • normal modal logic's OpenAlex ID is recorded as C114092440[6].

Why It Matters

normal modal logic ranks in the top 2% of general entities by monthly Wikipedia readership (19 views/month).[1] It has Wikipedia articles in 9 language editions, a strong signal of global cultural recognition.[7]

References

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

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . Freebase Data Dumps. wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . OpenAlex. Retrieved . docs.openalex.org. Provenance: wikidata.org.

Aggregate / graph-position facts

  1. [1] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [7] ↑ . 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). normal modal logic. Retrieved April 11, 2026, from https://4ort.xyz/entity/normal-modal-logic
MLA “normal modal logic.” 4ort.xyz Knowledge Graph, 4ort.xyz, 11 Apr. 2026, https://4ort.xyz/entity/normal-modal-logic.
BibTeX @misc{4ortxyz_normal-modal-logic_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{normal modal logic}}, year = {2026}, url = {https://4ort.xyz/entity/normal-modal-logic}, note = {Accessed: 2026-04-11}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): normal modal logic — https://4ort.xyz/entity/normal-modal-logic (retrieved 2026-04-11)

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