2010/09/24 by Bahram Rangipour, Rangipour, Bahram
Mathematics · #FOS: Mathematics #K-Theory and Homology (math.KT) #Quantum Algebra (math.QA) #math.KT #math.QA
paper · pdf · doi:10.48550/arxiv.1009.4817
12 pages, to appear in Contemporary Mathematics, a volume in honor of Henri Moscovici's 65th birthday
arxiv created 2010/09/24 · arxiv updated 2010/09/27
We use stable anti Yetter-Drinfeld contramodules to improve the cup products in Hopf cyclic cohomology. The improvement fixes the lack of functoriality of the cup products previously defined and show that the cup products are sensitive to the coefficients.