Weierstrass function

function that is continuous everywhere but differentiable nowhere
Thing teragon Q94491
Weierstrass function
Eeyore22 · Public Domain · Wikimedia
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Weierstrass function

Summary

Weierstrass function is a teragon[1]. It draws 633 Wikipedia views per month (teragon category, ranking #1 of 1).[2]

Key Facts

  • Weierstrass function's video is recorded as Weierstrass Animation.gif[3].
  • Weierstrass function's image is recorded as WeierstrassFunction.svg[4].
  • Weierstrass function's instance of is recorded as teragon[5].
  • Weierstrass function's instance of is recorded as continuous function[6].
  • Karl Weierstraß is named after Weierstrass function[7].
  • Weierstrass function's Commons category is recorded as Weierstrass function[8].
  • Weierstrass function's Freebase ID is recorded as /m/02963y[9].
  • Weierstrass function's different from is recorded as Weierstrass functions[10].
  • Weierstrass function's defining formula is recorded as \begin{aligned}&f(x)=\sum_{n=0}^\infty a^n\cos(b^n\pi x)\&0<a<1\&b\in{1,3,5,\dotsc}\&ab>1+\frac32\pi\end{aligned}<sup id="cite-C14" class="cite-ref" title="Weierstrass function — defining formula (P2534): \begin{aligned}&f(x)=\sum_{n=0}^\infty a^n\cos(b^n\pi x)\&0<a<1\&b\in{1,3,5,\dotsc}\&ab>1+\frac32\pi\end{aligned}">[11].
  • Weierstrass function's MathWorld ID is recorded as WeierstrassFunction[12].
  • Weierstrass function's maintained by WikiProject is recorded as WikiProject Mathematics[13].
  • Weierstrass function's Microsoft Academic ID is recorded as 2777723054[14].
  • Weierstrass function's in defining formula is recorded as f[15].
  • Weierstrass function's in defining formula is recorded as \cos[16].
  • Weierstrass function's in defining formula is recorded as \pi[17].
  • Weierstrass function's in defining formula is recorded as b[18].
  • Weierstrass function's in defining formula is recorded as a[19].
  • Weierstrass function's Namuwiki ID is recorded as 바이어슈트라스 함수[20].

Why It Matters

Weierstrass function draws 633 Wikipedia views per month (teragon category, ranking #1 of 1).[2] It has Wikipedia articles in 22 language editions, a strong signal of global cultural recognition.[21] It is known by 11 alternative names across languages and contexts.[22]

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.
  7. [9] . Freebase Data Dumps. wikidata.org.
  8. [10] . wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . wikidata.org.
  17. [19] . wikidata.org.
  18. [20] . wikidata.org.

Class ancestry

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

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [21] . Wikidata sitelinks. wikidata.org.
  3. [22] . 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). Weierstrass function. Retrieved May 3, 2026, from https://4ort.xyz/entity/weierstrass-function
MLA “Weierstrass function.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/weierstrass-function.
BibTeX @misc{4ortxyz_weierstrass-function_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Weierstrass function}}, year = {2026}, url = {https://4ort.xyz/entity/weierstrass-function}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Weierstrass function — https://4ort.xyz/entity/weierstrass-function (retrieved 2026-05-03)

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