Cohomological estimates for $\cat(X,ξ)$

Michael Farber, Dirk Schuetz

This paper studies the homotopy invariant $\cat(X,ξ)$ introduced in \cite{farbe2}. Given a finite cell-complex $X$, we study the function $ξ\mapsto \cat(X,ξ)$ where $\xi$ varies in t…