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
Examples of cohomology in a Sentence
Recent Examples on the Web
This was the case with Grothendieck, with his application of sheaf cohomology to geometry.
—
Quanta Magazine, 13 Mar. 2024
Introduction Not all cohomology classes are created equal, however.
—Leila Sloman, Quanta Magazine, 16 Feb. 2023
On the doughnut, cohomology classes are simply loops.
—Leila Sloman, Quanta Magazine, 16 Feb. 2023
Feynman diagrams can be translated into geometric spaces that are amenable to analysis by cohomology.
—Quanta Magazine, 20 Aug. 2020
Quanta Magazine, 13 Mar. 2024
Introduction Not all cohomology classes are created equal, however.
—Leila Sloman, Quanta Magazine, 16 Feb. 2023
On the doughnut, cohomology classes are simply loops.
—Leila Sloman, Quanta Magazine, 16 Feb. 2023
Feynman diagrams can be translated into geometric spaces that are amenable to analysis by cohomology.
—Quanta Magazine, 20 Aug. 2020
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'cohomology.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near cohomology
Cite this Entry
“Cohomology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cohomology. Accessed 31 Oct. 2024.
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