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Cohomological estimates for cat(X,xi) (2007)
Journal Article
Farber, M., & Schuetz, D. (2007). Cohomological estimates for cat(X,xi). Geometry & Topology, 11(1), 1255-1288. https://doi.org/10.2140/gt.2007.11.1255

This paper studies the homotopy invariant cat(X,ξ) introduced in [1: Michael Farber, `Zeros of closed 1-forms, homoclinic orbits and Lusternik–Schnirelman theory', Topol. Methods Nonlinear Anal. 19 (2002) 123–152]. Given a finite cell-complex X, we s... Read More about Cohomological estimates for cat(X,xi).