Recent Papers and Software

  • 10,000 Yen prize problem was solved on October 13, 2017, by Xiang-Sheng Wang. See Appendix 1 of this paper"

  • Software

  • Gradient Methods (CG/CBB/Nonmonotone)

  • Error Estimation

  • LPDASA/Update/Downdate

  • Partitioning

  • Regularization Methods

  • Lightning

  • Communication and Digital Signal Processing

  • Optimal Control

  • Electronic Structure Computations

  • Imaging

  • W. W. Hager, Inequalities and approximation, in Constructive Approaches to Mathematical Models, C. V. Coffman and G. J. Fix, editors, Academic Press, New York, 1979, 189-202.
  • SIAM Gator student conference, March 3-4, 2004,
  • C. P. Bras, W. W. Hager, and J. J. Judice, An investigation of feasible descent algorithms for estimating the condition number of a matrix, TOP, Journal of the Spanish Society of Statistics and Operations Research, DOI 10.1007/s11750-010-0161-9
  • J. Luo, W. W. Hager, and R. Wu, A differential equation model for functional mapping of a virus-cell dynamic system, Journal of Mathematical Biology, 61 (2010), pp. 1-15.
  • W. W. Hager and D. T. Phan, An ellipsoidal branch and bound algorithm for global optimization, SIAM Journal on Optimization, 20 (2009), pp. 740-758.
  • W. W. Hager, R. Rostamian, D. Wang, The wave annihilation technique and the design of nonreflective coatings, SIAM Journal on Applied Mathematics, 60 (2000), pp. 1388-1424.
  • Fifth SIAM Conference on Control and Its Applications
  • N. Ghosh, W. W. Hager, and P. Sarmah, The application of eigenpair stability to block diagonalization (SIAM Journal on Numerical Analysis, 34 (1997), pp. 1255-1268)
  • Optpack, Software for solving nonlinear optimization problems
  • Optpack Test problems, Examples showing how to use optpack with the Colville test problems
  • Holly Peters Hirst, N-step quadratic convergence in the conjugate gradient method (Phd thesis at Penn State University, 1989)