the immersed interface method for elliptic equations with discontinuous coefficients and singular sources
@article{LeVeque1994theII, title={the immersed interface method for elliptic equations with discontinuous coefficients and singular sources}, author={Randall J. LeVeque and Zhilin Li}, journal={SIAM Journal on Numerical Analysis}, year={1994}, volume={31}, pages={1019-1044} }
The authors develop finite difference methods for elliptic equations of the form \[ \nabla \cdot (\beta (x)\nabla u(x)) + \kappa (x)u(x) = f(x)\] in a region $\Omega $ in one or two space dimension...
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