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KIAM Preprint № 74, Moscow, 2019
Authors: Bakhvalov P.A., Surnachev M.D.
Linear schemes with several degrees of freedom for the multidimensional transport equation
We consider linear schemes with several degrees of freedom for the transport equation. The solution error possesses the estimate O(hp + thq) where p is equal to or greater by one than the truncation error order and q>=p. We prove the existence of a mapping of smooth functions on the mesh space providing the q-th order of the truncation error and deviating from the standard mapping (L2-projection for example) by the order hp. In contrast with 1D case local mapping with such properties generally does not exist. We prove sufficient existence conditions.
consistency and accuracy, superconvergence
Publication language: russian,  pages: 44
Research direction:
Mathematical problems and theory of numerical methods
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About authors:
  • Bakhvalov Pavel Alexeevisch, RAS
  • Surnachev Mikhail Dmitriyevich, RAS