 

Bernhard Burgstaller
Equivariant KKtheory for semimultiplicative sets


Published: 
November 30, 2009

Keywords: 
Equivariant KKtheory, semimultiplicative set, semigroup 
Subject: 
19K35, 20N02 


Abstract
A semimultiplicative set G is a set which has a partially defined
associative multiplication. We associate a reduced C*algebra
C*_{r}(G) to G and define reduced crossed products A \rtimes G.
Moreover, we introduce a Gequivariant KKtheory
and show the existence of a Kasparov product.


Acknowledgements
The author was supported by the Marie Curie Network MRTNCT2006031962.


Author information
Doppler Institute for mathematical physics, Trojanova 13, 12000 Prague, Czech Republic

