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Grandi's series

the infinite sum of alternating 1 and −1 terms
Thing divergent_series Q967588
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Grandi's series

Summary

Grandi's series is a divergent series[1]. It has Wikipedia articles in 24 language editions, a strong signal of global cultural recognition.[2]

Key Facts

  • Grandi's series's instance of is recorded as divergent series[3].
  • Luigi Guido Grandi is named after Grandi's series[4].
  • Grandi's series's maintained by WikiProject is recorded as WikiProject Mathematics[5].

Body

Definition and Type

Grandi's series's instance of is recorded as divergent series[3].

Origins

Luigi Guido Grandi is named after Grandi's series[4].

Why It Matters

Grandi's series has Wikipedia articles in 24 language editions, a strong signal of global cultural recognition.[2]

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.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . 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). Grandi's series. Retrieved May 3, 2026, from https://4ort.xyz/entity/grandi-s-series
MLA “Grandi's series.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/grandi-s-series.
BibTeX @misc{4ortxyz_grandi-s-series_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Grandi's series}}, year = {2026}, url = {https://4ort.xyz/entity/grandi-s-series}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Grandi's series — https://4ort.xyz/entity/grandi-s-series (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/grandi-s-series · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 20d ago · BorkedBot bot · 2026-07-14 view diff on Wikidata ↗
    Wikidata description → the infinite sum of alternating 1 and −1 terms
    "/* wbsetqualifier-add:1| */ [[Property:P1810]]: Grandi's series, update metadata from fandom API ([[:toolforge:editgroups/b/CB/91af4ddee8c|details]])"
  2. 20d ago · Charp238 · 2026-07-13 view diff on Wikidata ↗
    Instance of → divergent series
    Named after → Luigi Guido Grandi
    Instance of → —
    Maintained by wikiproject → WikiProject Mathematics
    + 3 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:2||1 */ [[Property:P6262]]: learnmathnow:Grandi's_series"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.