BEGIN:VCALENDAR VERSION:2.0 PRODID:-//132.216.98.100//NONSGML kigkonsult.se iCalcreator 2.20.4// BEGIN:VEVENT UID:20250808T043005EDT-3805DbcolZ@132.216.98.100 DTSTAMP:20250808T083005Z DESCRIPTION:On semiconjugate Rational Functions\n\nLet A\, B be two rationa l functions of degree at least two on the Riemann sphere. The function B i s said to be semiconjugate to the function A if there exists a nonconstant rational function X such that the equality (1) A ◦ X = X ◦ B holds. The s emiconjugacy relation plays an important role in the classical theory of c omplex dynamical systems as well as in the new emerging field of arithmeti c dynamics. In the talk we present a description of solutions of (1) in te rms of twodimensional orbifolds of non-negative Euler characteristic on th e Riemann sphere. As an application\, we provide new results about the cla ssical problem of description of commuting rational functions to which equ ation (1) reduces for A = B.\n DTSTART:20160725T171500Z DTEND:20160725T171500Z LOCATION:Burnside Hall Room 920\, @ 1:30 pm\, Burnside Hall\, CA\, QC\, Mon treal\, H3A 0B9\, 805 rue Sherbrooke Ouest SUMMARY:Fedor Pakovich (Ben Gurion University) Analysis Seminar URL:/mathstat/channels/event/fedor-pakovich-ben-gurion -university-analysis-seminar-261841 END:VEVENT END:VCALENDAR