An observation concerning Ritz-Galerkin methods with indefinite bilinear forms

Schatz, Alfred H.

doi:10.1090/S0025-5718-1974-0373326-0

An observation concerning Ritz-Galerkin methods with indefinite bilinear forms
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by Alfred H. Schatz PDF

Math. Comp. 28 (1974), 959-962 Request permission

Abstract:

Existence, uniqueness and error estimates for Ritz-Galerkin methods are discussed in the case where the associated bilinear form satisfies a Gårding type inequality, i.e., it is indefinite in a certain way. An application to the finite element method is given.

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