Integrable cluster dynamics of directed networks and pentagram maps

Michael Gekhtman, Michael Shapiro, Serge Tabachnikov, Alek Vainshtein

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


The pentagram map was introduced by R. Schwartz more than 20 years ago. In 2009, V. Ovsienko, R. Schwartz and S. Tabachnikov established Liouville complete integrability of this discrete dynamical system. In 2011, M. Glick interpreted the pentagram map as a sequence of cluster transformations associated with a special quiver. Using compatibility of Poisson and cluster structures and Poisson geometry of directed networks on surfaces, we generalize Glick's construction to include the pentagram map into a family of discrete integrable maps and we give these maps geometric interpretations. The appendix relates the simplest of these discrete maps to the Toda lattice and its tri-Hamiltonian structure.

Original languageEnglish (US)
Pages (from-to)390-450
Number of pages61
JournalAdvances in Mathematics
StatePublished - Sep 10 2016

All Science Journal Classification (ASJC) codes

  • General Mathematics


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