James Lee Hafner
Journal of Number Theory
We consider the question of finding an extreme value for some function of the eigenvalues of the differential equation y″ + λφ(x) y = 0,y(0) = y(1) = 0, as φ(x) varies over a region in a function space. A characterization of the φ(x) at which the function of the eigenvalues achieves its extremum is derived. © 1979.
James Lee Hafner
Journal of Number Theory
D.S. Turaga, K. Ratakonda, et al.
SCC 2006
Peter Wendt
Electronic Imaging: Advanced Devices and Systems 1990
Jonathan Ashley, Brian Marcus, et al.
Ergodic Theory and Dynamical Systems