Recent Papers and Reports:

• W. W. Hager Iterative methods for nearly singular linear systems
• W. W. Hager The LP dual active set algorithm
• W. W. Hager and Y. Krylyuk, Graph partitioning and continuous quadratic programming
• W. W. Hager, A discrete model for the lightning discharge
• W. W. Hager, R. Rostamian, D. Wang, The wave annihilation technique and the design of nonreflective coatings
• A. L. Dontchev, W. W. Hager, and V. M. Veliov, Uniform convergence and mesh independence of Newton's method for discretized variational problems
• A. L. Dontchev and W. W. Hager, The Euler approximation in state constrained optimal control
• A. L. Dontchev and W. W. Hager, A new approach to Lipschitz continuity in state constrained optimal control
• T. A. Davis and W. W. Hager, Modifying a Sparse Cholesky Factorization
• A. L. Dontchev and W. W. Hager, Lipschitzian stability for state constrained nonlinear optimal control
• W. W. Hager, Stabilized sequential quadratic progamming
• W. W. Hager and S. Gowda, Stability in the presence of degeneracy and error estimation
• N. Ghosh, W. W. Hager, and P. Sarmah, The application of eigenpair stability to block diagonalization
• W. W. Hager, C.-L. Shih, and E. O. Lundin, Active set strategies and the LP dual active set algorithm
• Optpack, Software for solving nonlinear optimization problems
• Optpack Test problems, Examples showing how to use optpack with the Colville test problems