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The solution of elliptic equations with discontinuous coefficients on a regular mesh. (English) Zbl 0306.35041

MSC:
35J25 Boundary value problems for second-order elliptic equations
35B45 A priori estimates in context of PDEs
35J20 Variational methods for second-order elliptic equations
35R05 PDEs with low regular coefficients and/or low regular data
65N12 Stability and convergence of numerical methods for boundary value problems involving PDEs
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