$k$-theory $k$-theoryandhomology;cyclichomologyandcohomology $k$-theoryandoperatoralgebras 13f3514b0516e4016t0519k5619d5522e4658b3453c2458j42 algebraicgeometry analysisonmanifolds arithmeticringsandotherspecialrings associativeringsandalgebras bindingsites biological biologicaltransport cellmembrane cellreceptors cellsurface cellularcontrolmechanisms commutativealgebra commutativerings congresses differentialgeometry dihedral globalanalysis globalanalysis(mathematics) globaldifferentialgeometry higheralgebraic$k$-theory homologicalmethods hopfalgebras hopfalgebrasandtheirapplications indextheory infinite-dimensionalmanifolds liegroups localtheory membranes(biology) metabolism noncommutativealgebras noncommutativegeometry(àlaconnes) noncommutativeglobalanalysis noncommutativeresidues nucleotides partialdifferentialequationsonmanifolds;differentialoperators qh601i13t1978 quantumgroupsandrelatedtopics receptors rigidityresults semisimpleliegroupsandtheirrepresentations singularities topologicalgroups toxins wittvectorsandrelatedrings