
            
          
          
          
            
              This is an information website for
                  the online seminars on preserver problems and related
                  topics. The aim of this lecture series is to provide
                  the preserver community with an opportunity of regular
                  meetings these days when physical seminars and
                  conferences are not possible.
                  The talks will be accessible through the Zoom video
                  communication platform.
                 
                 If you are interested in following the
                  updates of this webinar series, please write an e-mail
                  to preserverwebinar[at]gmail[dot]com with the subject
                  "Subscribe". 
                 To save the dates or create calendar
                  events for yourself we recommend you to follow this [link].
               
               
                
               
            
            
            May 29 16:00 London
                                    time
                
                Speaker: Chi-Kwong
                  Li  (The College of William and Mary,
                Virginia)
                Title: Quantum states and quantum
                  channels
              
              
              June 05 12:00 London
                                    time
              
               Speaker: Lajos
                  Molnár (University of Szeged, Hungary)
               Title: Means and
                  their preservers 
              
              
              June 12 16:00 London time
               Speaker: Antonio
                  Peralta (University of Granada, Spain)
               Title: Tingley's
                  problem for subsets strictly smaller than the unit
                  sphere 
              
              
              
              
              
                
              
              
              
                
              July 8 12:00 London
                                    time
                
                Speaker: Bas
                  Lemmens (University of Kent, United Kingdom)
                Title: A metric version of a
                  theorem by Poincaré
                
                
              July 15 12:00 London
                                    time
                
                Speaker: Denny
                  H. Leung (National University of Singapore,
                Singapore)
                Title: Nonlinear biseparating maps
              
                    
                    July 22 16:00 London time
                  
                  Speaker: Javad
                    Mashreghi (Laval University, Canada)
                  Title: On
                    Gleason-Kahane-Zelazko Theorems
                       
              
              July 29 12:00 London time
                      
                      Speaker: Ying-Fen
                        Lin (Queens University Belfast, Northern
                      Ireland)
                      Title: Schur multipliers and
                        positive extensions
                    
                      
                    Aug 5
                        12:00 London time
                      
                      Speaker: Osamu
                        Hatori (Niigata University, Japan) 
                      Title: When does an isometry
                        on a Banach algebra preserve the multiplicative
                        structure?
                              
                             
              Aug 12 12:00 London time
                              
                              Speaker: Marten
                                Wortel (University of Pretoria,
                              South Africa) 
                              Title: Order
                                isomorphisms between effect algebras of
                                atomic JBW-algebras
                              
                              
                            Aug 19 15:00 London time
                      
                      Speaker: Timur
                        Oikhberg (University of Illinois, United
                      States) 
                      Title: Stability of
                        disjointness preservation
                      
                      
                    Aug 26
                        12:00 London time
                      
                      Speaker: Ngai-Ching
                        Wong (National Sun Yat-sen University,
                      Taiwan) 
                      Title: Disjointness preservers
                        of operator algebras
                      
                    
              Sep 02 12:00 London time
                              
                              Speaker: Haonan
                                Zhang (IST Austria, Austria) 
                              Title: Data
                                processing inequalities for alpha-z
                                Rényi relative entropies and the
                                equality conditions
                              
                              
                              
              Sep 16 12:00 London time
                              
                              Speaker: Mark
                                Pankov (University of Warmia &
                              Mazury, Poland and JKU Linz, Austria)
                              Title: A geometric
                                approach to Wigner-type theorems
                              
                            
              Sep
                                                          30 12:00 London
                                                          time
                                                          
                                                          Speaker: Dijana
                                                          Ilišević
                                                          (University of
                                                          Zagreb,
                                                          Croatia)
                                                          Title: An
                                                          inverse
                                                          eigenvalue
                                                          problem for
                                                          isometries
              
              
                                                          Oct
                                                          21 12:00
                                                          London time
                                                          
                                                          Speaker: Miklós
                                                          Pálfia
                                                          (Sungkyunkwan
                                                          University,
                                                          Republic of
                                                          Korea)
                                                          Title: Analytic
                                                          lifts of
                                                          operator
                                                          monotone and
                                                          concave
                                                          functions
                                                          
                                                          
                                                          
              Nov
                                                          4 12:00
                                                          London
                                                          time
                                                          
                                                          Speaker: Fernanda
                                                          Botelho
                                                          (University of
                                                          Memphis,
                                                          United States)
                                                          Title: Projections
                                                          and isometries
                                                          in Banach
                                                          spaces
                                                          
                                                          
                                                          
                             
                     
                
            
            
               Organizers:
               
              
                 György Pál Gehér
               University
                of Reading
               
               Tamás Titkos
               Alfréd
                Rényi Institute of Mathematics
               
              Dániel Virosztek
               Institute
                of Science and Technology Austria
               
              
              If you have any questions
                  or queries, please send a message to
                  preserverwebinar[at]gmail[dot]com.