Quantum symmetries in noncommutative C*-systems
Tom 43 / 1998
                    
                    
                        Banach Center Publications 43 (1998), 297-307                    
                                        
                        DOI: 10.4064/-43-1-297-307                    
                                    
                                                Streszczenie
We introduce the notion of a completely quantum C*-system (A,G,α), i.e. a C*-algebra A with an action α of a compact quantum group G. Spectral properties of completely quantum systems are investigated. In particular, it is shown that G-finite elements form the dense *-subalgebra
 
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            