group cohomology, nonabelian group cohomology, Lie group cohomology
cohomology with constant coefficients / with a local system of coefficients
differential cohomology
algebraic topology – application of higher algebra and higher category theory to the study of (stable) homotopy theory
A multiplicative cohomology theory $E$ is called even if its cohomology ring is trivial in all odd degrees:
For an even cohomology theory $E$:
where $|x|=2$.
Any even cohomology theory is complex orientable; a choice of complex orientation gives an isomorphism
Last revised on September 23, 2021 at 09:20:07. See the history of this page for a list of all contributions to it.