A continuous space-time finite element method for the wave equation
Donald French, Todd Peterson
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Source: Crossref
Published: Jan 1, 1996
DOI: 10.1090/s0025-5718-96-00685-0
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We consider a finite element method for the nonhomogeneous second-order wave equation, which is formulated in terms of continuous approximation functions in both space and time, thereby giving a unified treatment of the spatial and temporal discretizations. Our analysis uses primarily energy arguments, which are quite common for spatial discretizations but not for time. We present a priori nodal (in time) superconvergence error estimates without any special time step restrictions. Our method is based on tensor-product spaces for the full discretization.
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