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- W2972580632 abstract "A time-stepping L1 scheme for subdiffusion equation with a Riemann--Liouville time-fractional derivative is developed and analyzed. This is the first paper to show that the L1 scheme for the model problem under consideration is second-order accurate (sharp error estimate) over nonuniform time-steps. The established convergence analysis is novel, innovative and concise. For completeness, the L1 scheme is combined with the standard Galerkin finite elements for the spatial discretization, which will then define a fully-discrete numerical scheme. The error analysis for this scheme is also investigated. To support our theoretical contributions, some numerical tests are provided at the end. The considered (typical) numerical example suggests that the imposed time-graded meshes assumption can be further relaxed." @default.
- W2972580632 created "2019-09-19" @default.
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- W2972580632 date "2019-09-15" @default.
- W2972580632 modified "2023-09-27" @default.
- W2972580632 title "An L1 approximation for a fractional reaction-diffusion equation, a second-order error analysis over time-graded meshes" @default.
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