On joint spectral radii in locally convex algebras
Volume 175 / 2006
                    
                    
                        Studia Mathematica 175 (2006), 73-82                    
                                        
                        MSC: Primary 46H05, 46J05; Secondary 46H30.                    
                                        
                        DOI: 10.4064/sm175-1-4                    
                                    
                                                Abstract
We present several notions of joint spectral radius of mutually commuting elements of a locally convex algebra and prove that all of them yield the same value in case the algebra is pseudo-complete. This generalizes a result proved by the author in 1993 for elements of a Banach algebra.
 
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            