Mathematics of Computation, Vol. 25, No. 115 (Jul., 1971), pp. 413-424 (12 pages) The weak sequential compactness of reflexive Banach spaces is used to explain the fact that certain ill-posed, linear ...
We consider the linear Schrödinger equation and its discretization by split-step methods where the part corresponding to the Laplace operator is approximated by the midpoint rule. We show that the ...