We consider a model initial and boundary value problem for the wide-angle "parabolic" equation Lu r = icu of underwater acoustics, where L is a second-order differential operator in the depth variable ...
SIAM Journal on Numerical Analysis, Vol. 51, No. 4 (2013), pp. 2470-2490 (21 pages) The primary aim of this paper is to answer the question, What are the highest-order five-or nine-point compact ...
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