Tupper's self-referential formula

formula that visually represents itself when graphed
Thing inequation Q2630528
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Tupper's self-referential formula

Summary

Tupper's self-referential formula is an inequation[1]. It draws 169 Wikipedia views per month (inequation category, ranking #3 of 14).[2]

Key Facts

  • Tupper's self-referential formula is credited with the discovery of Jeff Tupper[3].
  • Tupper's self-referential formula's instance of is recorded as inequation[4].
  • Jeff Tupper is named after Tupper's self-referential formula[5].
  • Tupper's self-referential formula's Freebase ID is recorded as /m/027v6dd[6].
  • Tupper's self-referential formula's official website is recorded as http://www.dgp.toronto.edu/people/mooncake/[7].
  • Tupper's self-referential formula's defining formula is recorded as {1\over 2} < \left\lfloor \mathrm{mod}\left(\left\lfloor {y \over 17} \right\rfloor 2^{-17 \lfloor x \rfloor - \mathrm{mod}(\lfloor y\rfloor, 17)},2\right)\right\rfloor<sup id="cite-C6" class="cite-ref" title="Tupper's self-referential formula — defining formula (P2534): {1\over 2} < \left\lfloor \mathrm{mod}\left(\left\lfloor {y \over 17} \right\rfloor 2^{-17 \lfloor x \rfloor - \mathrm{mod}(\lfloor y\rflo">[8].
  • Tupper's self-referential formula's MathWorld ID is recorded as TuppersSelf-ReferentialFormula[9].
  • Tupper's self-referential formula's maintained by WikiProject is recorded as WikiProject Mathematics[10].
  • Tupper's self-referential formula's Microsoft Academic ID is recorded as 2780670724[11].

Body

Works and Contributions

Tupper's self-referential formula is credited with the discovery of Jeff Tupper[3].

Why It Matters

Tupper's self-referential formula draws 169 Wikipedia views per month (inequation category, ranking #3 of 14).[2] It has Wikipedia articles in 16 language editions, a strong signal of global cultural recognition.[12]

References

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

Direct Wikidata claims

  1. [4] . wikidata.org.
  2. [3] . wikidata.org.
  3. [5] . wikidata.org.
  4. [6] . Freebase Data Dumps. wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . wikidata.org.
  9. [11] . wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [12] . 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). Tupper's self-referential formula. Retrieved May 3, 2026, from https://4ort.xyz/entity/tupper-s-self-referential-formula
MLA “Tupper's self-referential formula.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/tupper-s-self-referential-formula.
BibTeX @misc{4ortxyz_tupper-s-self-referential-formula_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Tupper's self-referential formula}}, year = {2026}, url = {https://4ort.xyz/entity/tupper-s-self-referential-formula}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Tupper's self-referential formula — https://4ort.xyz/entity/tupper-s-self-referential-formula (retrieved 2026-05-03)

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