A positivity-preserving edge-centred finite volume scheme for heterogeneous and anisotropic diffusion problems on polygonal meshes

Numerical interpolation (65D05) Mesh generation, refinement, and adaptive methods for boundary value problems involving PDEs (65N50) Waves and radiation in optics and electromagnetic theory (78A40) Positive solutions to PDEs (35B09) Numerical solution of discretized equations for initial value and initial-boundary value problems involving PDEs (65M22) Finite volume methods for boundary value problems involving PDEs (65N08)

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