Richard Z. Robinson		Graduate Student Department of Mathematics University of Washington Seattle, WA 98195 Email: rzr@math.washington.edu Office: PDL C-110

Research

Papers

• J. Gouveia, et. al. Which Nonnegative Matrices Are Slack Matrices?. to appear in Linear Algebra and its Applications. 2013.

• J. Gouveia, R. Robinson, R. Thomas. Polytopes of Minimum Positive Semidefinite Rank. to appear in Discrete and Computational Geometry. 2013.

• J. Gouveia, R. Robinson, R. Thomas, Worst-Case Results for Positive Semidefinite Rank. 2013.

Codes

• Sage code to test if a given matrix is a slack matrix: SlackMatrixRecognition

• Mathematica code to generate tilings via projections from higher dimensional lattices: ProjectionScript.m, FourierScript.m, Demo_Projection.nb

Other Stuff