Euclidean geometric description of radial centers of a triangle
Tom 170 / 2022
                    
                    
                        Colloquium Mathematicum 170 (2022), 275-288                    
                                        
                        MSC: Primary 51N20; Secondary 51M04, 26B05, 26E99.                    
                                        
                        DOI: 10.4064/cm8493-12-2021                    
                                            
                            Opublikowany online: 26 May 2022                        
                                    
                                                Streszczenie
We consider the convolution of a radially symmetric function and the characteristic function of a triangle. We describe the location of a critical point of the convolution in the Euclidean geometric manner. The description slightly shortens the proof of the analytic characterizations of equilateral triangles shown in [S. Sakata, Ann. Mat. Pura Appl. 200 (2021)].
 
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            