37E05 Maps of the interval (piecewise continuous, continuous, smooth)
37E10 Maps of the circle 
37E15 Combinatorial dynamics (types of periodic orbits)
37E20 Universality, renormalization [See also 37F25]
37E25 Maps of trees and graphs 
37E30 Homeomorphisms and diffeomorphisms of planes and surfaces 
37E35 Flows on surfaces 
37E40 Twist maps 
37E45 Rotation numbers and vectors 
37E99 None of the above, but in this section