There are no periodic cycles on the boundary of siegel discs of rational mapsThere are no periodic cycles on the boundary of siegel discs of rational maps Δημοσίευση σε Συνέδριο Conference Publication 2015-12-012000enhttp://creativecommons.org/licenses/by/4.0/Proceedings of the International Conference in memory of C. Caratheodory Gryspolakis Ioakeim Γρυσπολακης Ιωακειμ Mathematics