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Error estimates for the combinedh andp versions of the finite element method (1981)

Babuška, Ivo ; Dorr, Milo R.

Springer

Numerische Mathematik 37 (1981), S. 257-277

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Details

ISSN: 0945-3245

Schlagwort(e): AMS(MOS): 65N30 ; CR: 5.17

Quelle: Springer Online Journal Archives 1860-2000

Thema: Mathematik

Notizen: Summary In theh-version of the finite element method, convergence is achieved by refining the mesh while keeping the degree of the elements fixed. On the other hand, thep-version keeps the mesh fixed and increases the degree of the elements. In this paper, we prove estimates showing the simultaneous dependence of the order of approximation on both the element degrees and the mesh. In addition, it is shown that a proper design of the mesh and distribution of element degrees lead to a better than polynomial rate of convergence with respect to the number of degrees of freedom, even in the presence of corner singularities. Numerical results comparing theh-version,p-version, and combinedh-p-version for a one dimensional problem are presented.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01398256

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