Dyamical systems defined by self maps commuting each other are closely related. In othe owrds, maps defining dynamical system with some specific property should have strict condition. For example, we only have three kinds of polynomials commtuning each others; power maps, Chebychev polynomials and iterates of the same polynomial. In this talk, we examine properties of dynamical systems defined by commuting maps and conclude that the number of commuting endomorphisms of bounded degree is finite. It is a joint work with Hexi Ye.
Finiteness of commuting maps of bounded degree
Jan. 12, 2016 12:10pm (MATH …
Kempner
Erica Flapan (Pomona College)
X
Chemists have defined the point group of a molecule as the group of rigid symmetries of its molecular graph in R^3. While this group is useful for analyzing the symmetries of rigid molecules, it does not include all of the symmetries of molecules which are flexible or can rotate around one or more bonds. To study the symmetries of such molecules, we define the topological symmetry group of a graph embedded in R^3 to be the subgroup of the automorphism group of the abstract graph that is induced by homeomorphisms of R^3. This group gives us a way to understand not only the symmetries of non-rigid molecular graphs, but the symmetries of any graph embedded in R^3. The study of such symmetries is a natural extension of the study of symmetries of knots. In this talk we will present a survey of results about the topological symmetry group and how it can play a role in analyzing the symmetries of non-rigid molecules.
Finiteness of commuting maps of bounded degree