Chapter 1 is part of a review which will be published as: "Gaines, graphs and sets: dynamics and geometry of evolution", M.A. Nowak, C.E. Tarnita, T. Antal. Phil. Trans. Royal Soc., 2010. Chapters 2 and 3 is published as: "Evolutionary dynamics in set structured populations", C.E. Tarnita, T. Antal, H