Alexander–Spanier cohomology

cohomology theory for topological spaces
Thing invariant Q4143007
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Alexander–Spanier cohomology

Summary

Alexander–Spanier cohomology is an invariant[1]. It draws 4 Wikipedia views per month (invariant category, ranking #29 of 37).[2]

Key Facts

  • Alexander–Spanier cohomology's instance of is recorded as invariant[3].
  • Alexander–Spanier cohomology's instance of is recorded as mathematical concept[4].
  • James Waddell Alexander II is named after Alexander–Spanier cohomology[5].
  • Edwin Spanier is named after Alexander–Spanier cohomology[6].
  • Alexander–Spanier cohomology's Freebase ID is recorded as /m/033ffc[7].
  • Alexander–Spanier cohomology's defining formula is recorded as df(x_0,\ldots,x_p)= \sum_i(-1)^if(x_0,\ldots,x_{i-1},x_{i+1},\ldots,x_p)[8].
  • Alexander–Spanier cohomology's studied by is recorded as category theory[9].
  • Alexander–Spanier cohomology's maintained by WikiProject is recorded as WikiProject Mathematics[10].
  • Alexander–Spanier cohomology's Microsoft Academic ID is recorded as 2780342862[11].

Why It Matters

Alexander–Spanier cohomology draws 4 Wikipedia views per month (invariant category, ranking #29 of 37).[2]

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APA 4ort.xyz Knowledge Graph. (2026). Alexander–Spanier cohomology. Retrieved May 3, 2026, from https://4ort.xyz/entity/alexander-spanier-cohomology
MLA “Alexander–Spanier cohomology.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/alexander-spanier-cohomology.
BibTeX @misc{4ortxyz_alexander-spanier-cohomology_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Alexander–Spanier cohomology}}, year = {2026}, url = {https://4ort.xyz/entity/alexander-spanier-cohomology}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Alexander–Spanier cohomology — https://4ort.xyz/entity/alexander-spanier-cohomology (retrieved 2026-05-03)

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