Publicado 2013-07-29
Palabras clave
- Precondicionamiento,
- método Gauss-Seidel,
- descomposiciones regulares,
- precondicionadores de punto y bloque
Cómo citar
Resumen
Se propone una técnica de precondicionamiento para el método deGauss-Seidel basada en la aplicación de una cantidad de pasos arbitrarios perofijos del precondicionador I + Smax. Se analiza de manera teórica la reducción del radio espectral de la matriz de iteración del método de Gauss-Seidel para Z-matrices diagonalmente dominantes. En particular, se demuestra que después de un número finito de pasos esta matriz se reduce a una matriz nula. Para ilustrar la eficacia de la técnica propuesta se presentan experimentos numéricos para una amplia variedad de matrices. Se estudian numéricamente versiones puntuales y de bloques del precondicionador.
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Referencias
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