Thompson's group is not SCY

  • Stefan Friedl

    Universität Regensburg, Germany
  • Stefano Vidussi

    University of California, Riverside, United States


In this note we prove that Thompson's group cannot be the fundamental group of a symplectic 4-manifold with canonical class by showing that its Hausmann–Weinberger invariant is strictly positive.

Cite this article

Stefan Friedl, Stefano Vidussi, Thompson's group is not SCY. Groups Geom. Dyn. 9 (2015), no. 1, pp. 325–329

DOI 10.4171/GGD/315