DPG method with optimal test functions for a fractional advection diffusion equation
classification
🧮 math.NA
keywords
advectionconvergencediffusionformulationfractionalfunctionsoptimaltest
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We develop an ultra-weak variational formulation of a fractional advection diffusion problem in one space dimension and prove its well-posedness. Based on this formulation, we define a DPG approximation with optimal test functions and show its quasi-optimal convergence. Numerical experiments confirm expected convergence properties, for uniform and adaptively refined meshes.
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