Contributions to some conjectures on a ternary exponential Diophantine equation
Tom 186 / 2018
                    
                    
                        Acta Arithmetica 186 (2018), 1-36                    
                                        
                        MSC: Primary 11D61; Secondary 11J86, 11D41.                    
                                        
                        DOI: 10.4064/aa8656-2-2018                    
                                            
                            Opublikowany online: 12 October 2018                        
                                    
                                                Streszczenie
We consider the exponential Diophantine equation $a^x+b^y=c^z$ for given pairwise coprime positive integers $a$, $b$ and $c$. The case where both $x$ and $y$ are even is thoroughly studied in order to solve the equation for some infinite classes of triples $(a,b,c)$ which have been unassailable via the previously existing methods. It may be recognized from one of our results that a “quarter” of a major unsolved problem of Jeśmanowicz concerning primitive Pythagorean triples is almost solved.