Grzegorz Graff

collaborators

2 papers

math.DS2025

Dold coefficients of quasi-unipotent homeomorphisms of orientable surfaces

Grzegorz Graff, WacÅaw Marzantowicz, Åukasz Patryk Michalak

The sequence of Dold coefficients $(a_{n} (f))$ of a self-map $f : X \to X$ forms a dual sequence to the sequence of Lefschetz numbers $(L (f^{n}))$ of iterations of $f$ under the MÃ…

math.DS2025

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

Grzegorz Graff, WacÅaw Marzantowicz, Åukasz 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…