1999 Publications
Ill-conditioned convex processes and linear inequalities
A.S. Lewis,
Mathematics of Operations Research
24 (1999), 829-834.
Lidskii's theorem via nonsmooth analysis
A.S. Lewis,
SIAM Journal on Matrix Analysis and Applications
21 (1999), 379-381.
Nonsmooth analysis of eigenvalues
A.S. Lewis,
Mathematical Programming
84 (1999), 1-24.
The Clarke and Michel-Penot subdifferentials of the eigenvalues of a symmetric matrix
J.-B. Hiriart-Urruty and A.S. Lewis,
Computational Optimization and Applications
13 (1999), 13-23.