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D. Cheung and F. Cucker, Smoothed analysis of component-wise condition numbers for sparse matrices, IMA Journal of Numerical Analysis 35, pp.74-88, 2015. D. Cheung and F. Cucker, On the average condition of Linear Programs, SIAM J. Optim., 23(2), April 2013, Pages 799–810 D. Cheung, F. Cucker, and J. Pena, “On strata of degenerate polyhedral cones, II: Relations between condition measures”, Journal of Complexity, Volume 26, Issue 2, April 2010, Pages 209-226 D. Cheung, F. Cucker, and J. Pena, “On strata of degenerate polyhedral cones I: condition and distance to strata”, European Journal of Operational Research, Volume 198, Issue 1, 1 October 2009, Pages 23-28 D. Cheung and F. Cucker, “Component-wise condition numbers for random sparse matrices”, SIAM. J. Matrix Anal. & Appl. Volume 31, Issue 2, pp. 721-731 (2009)