6533b837fe1ef96bd12a295b

RESEARCH PRODUCT

K-theory of function rings

Thomas Fischer

subject

CombinatoricsRing (mathematics)Algebra and Number TheoryDiscrete spaceGeneral topologyTopological groupTopological spaceSpace (mathematics)K-theoryTopological vector spaceMathematics

description

AbstractThe ring R of continuous functions on a compact topological space Xwith values in R or C is considered. It is shown that the algebraic K-theory of such rings with coefficients in ZkZ, k any positive integer, agrees with the topological K-theory of the underlying space X with the same coefficient rings. The proof is based on the result that the map from Rδ (R with discrete topology) to R (R with compact-open topology) induces a natural isomorphism between the homologies with coefficients in ZkZ of the classifying spaces of the respective infinite general linear groups. Some remarks on the situation with X not compact are added.

10.1016/0022-4049(90)90076-thttp://dx.doi.org/10.1016/0022-4049(90)90076-t