cohomology
noun
co·ho·mol·o·gy
(ˌ)kō-hō-ˈmä-lə-jē 
: a part of the theory of topology in which groups are used to study the properties of topological spaces and which is related in a complementary way to homology theory
called also cohomology theory
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This was the case with Grothendieck, with his application of sheaf cohomology to geometry.
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Quanta Magazine, 13 Mar. 2024
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Quanta Magazine, 13 Mar. 2024
Cite this Entry
“Cohomology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cohomology. Accessed 31 Oct. 2025.
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