| Autor: |
Jinchao Xu, Ludmil Zikatanov |
| Předmět: |
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| Zdroj: |
Numerische Mathematik; Mar2003, Vol. 94 Issue 1, p195-202, 8p |
| Abstrakt: |
Summary. Some observations are made on abstract error estimates for Galerkin approximations based on Babuška-Brezzi conditions. A basic error estimate due to Babuška is sharpened by means of an identity that $\| P\|=/FORMULA> for any nontrivial idempotent operator P. Some remarks are also made on the Brezzi's theory for mixed variational problems and their Galerkin approximations. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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