CENTER FOR COMPUTATIONAL MATHEMATICS COLLOQUIUM

                  UNIVERSITY OF COLORADO AT DENVER



TITLE:   Wigner measures of finite difference schemes for 
         Schroedinger equation.
 

SPEAKER: Paola Pietra, IAN/CNR, Pavia, Italy
         

DATE:    Monday, August 18, 1997  


PLACE:   Math Conference Room 626 
         UCD Building, 1250 14th St., Denver


TIME:    noon (Refreshments served at 11:45 am) 



ABSTRACT

We apply Wigner-transform techniques to the analysis of
finite difference schemes for Scroedinger equation in the case of a small
Planck constant. In this way we are able to obtain sharp conditions
on the spatial-temporal grid which guarantee convergence for average values of 
observables as the Planck constant goes to zero.