Bredon cohomology
The Bredon cohomology, introduced by Glen E. Bredon, is a type of equivariant cohomology that is a contravariant functor from the category of G {\displaystyle G} -complexes with equivariant homotopy maps to the category of abelian groups together with the connecting homomorphism satisfying some conditions. == References == Bredon, Glen E. (2006) [1967], Equivariant cohomology theories, Lecture Notes in Mathematics, vol.