# 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)