Database of the minimal sets of Lefschetz periods for Morse-Smale diffeomorphisms of a connected sum of g tori

Morse–Smale diffeomorphisms, structurally stable and having relatively simple dynamics, constitute an important subclass of diffeomorphisms that have been carefully studied during past decades. For a given Morse–Smale diffeomorphism one can consider “Minimal set of Lefschetz periods”, which provides the information about the set of periodic points of a considered map, as it is the subset of its minimal periods. The dataset consists of 20 files indexed by numbers g=1,...,20. Each file provides all minimal sets of Lefschetz periods for orientation preserving Morse–Smale diffeomorphisms of M(g), an orientable compact surface without boundary of genus g (i.e. a connected sum of g tori). The data set takes into account not only the algebraical restrictions for the sets of minimal Lefschetz periods that come from zeta functions but also topological ones that can be deduced from the structure of the cohomology ring. The results are based on the algorithm available in the paper: G. Graff, M. Lebiedź, A. Myszkowski, Periodic expansion in determining minimal sets of Lefschetz periods for Morse–Smale diffeomorphisms, J. Fixed Point Theory Appl. (2019) 21:47, https://doi.org/10.1007/s11784-019-0680-4.