2011

Combinatorial Bounds on Nonnegative Rank and Extended Formulations

Fiorini, Samuel, Kaibel, Volker, Pashkovich, Kanstantsin et al.

Understand

An extended formulation of a polytope P is a polytope Q which can be projected onto P.

  • Extended formulations of small size (i.e., number of facets) are of interest, as they allow to model corresponding optimization problems as linear programs of small sizes.
  • The main known lower bounds on the minimum sizes of extended formulations for fixed polytope P (Yannakakis 1991) are closely related to the concept of nondeterministic communication complexity.
  • We study the relative power and limitations of the bounds on several examples.

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