R. P. Agarwal and myself are editing a special issue of the journal

Dynamic Systems and Applications

entitled

Discrete and Continuous Hamiltonian Systems.

We anticipate to have this special issue published by the beginning of the year 1999. Discussed topics include continuous/discrete treatment of linear/general Hamiltonian systems, Sturm-Liouville equations, Riccati equations, self-adjoint eigenvalue problems, and related variational analysis.

The deadline for submission of invited papers is September 1, 1998. Preliminary contributors and preliminary titles of the contributions are as follows: