Difference between revisions of "Cohomology"
Jump to navigation
Jump to search
(added math def of cohomology) |
(No difference)
|
Revision as of 23:26, January 14, 2008
In category theory, the cohomology of an exact sequence studies the relationship between the cokernels and coimage, when it is possible to take their quotient. Cohomology is the category-theoretic dual of homology.
Well-known examples include de Rham cohomology in differential geometry, elliptic curve cohomology, and hyperbolic cohomology of infinite Abelian groups.