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Higher order spatial approximations for degenerate parabolic stochastic partial differential equations

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      Abstract

      We consider an implicit finite difference scheme on uniform grids in time and space for the Cauchy problem for a second order parabolic stochastic partial differential equation where the parabolicity condition is allowed to degenerate. Such equations arise in the nonlinear filtering theory of partially observable diffusion processes. We show that the convergence of the spatial approximation can be accelerated to an arbitrarily high order, under suitable regularity assumptions, by applying an extrapolation technique.

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      Journal
      2012-10-03
      2012-10-04
      1210.1198

      http://arxiv.org/licenses/nonexclusive-distrib/1.0/

      Custom metadata
      65B05, 60H15, 35K65
      25 pages (minor changes)
      math.NA math.PR

      Numerical & Computational mathematics, Probability

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