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SUMMARY:Positive Semidefinite Rank of Polytopes - Robinson\, RZ (Universit
 y of Washington)
DTSTART:20130719T140000Z
DTEND:20130719T143000Z
UID:TALK46293@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:We define the positive semidefinite (psd) rank of a polytope P
  to be the size of the smallest cone of psd matrices that admits a lift of
  P. This can be thought of as a measure on how well semidefinite programmi
 ng may be used to optimize over P. We will present an overview of the subj
 ect\, several recent results\, and some open problems.\n
LOCATION:Seminar Room 1\, Newton Institute
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