Every finite set of natural numbers is realizable as algebraic periods of a Morse$\unicode{x2013}$Smale diffeomorphism

Grzegorz Graff, Wacław Marzantowicz, Łukasz Patryk Michalak +1

A given self-map $f:M\to M$ of a compact manifold determines the sequence $(L(f^n))$ of the Lefschetz numbers of its iterations. We consider its dual sequence $(a_n(f))$ give…