Serviços Personalizados
Journal
Artigo
Indicadores
- Citado por SciELO
- Acessos
Links relacionados
- Citado por Google
- Similares em SciELO
- Similares em Google
Compartilhar
Ciencia en Desarrollo
versão impressa ISSN 0121-7488
Resumo
MESA JUYA, A. Y. e CALVACHE ARCHILA, A.. Iterative refinement of the Gauss-Jordan method, in conditioned systems. Ciencia en Desarrollo [online]. 2019, vol.10, n.2, pp.113-124. ISSN 0121-7488. https://doi.org/10.19053/01217488.v10.n2.2019.8761.
In this paper, an iterative algorithm is constructed to improve the solution of a system of linear equations, of the form Ax = b, when it is solved using the Gauss-Jordan method and by using finite arithmetic. Understanding the functioning of the algorithm, showing its scope and analyzing how it is deduced, is achieved through the concept of matrix norm, together with some of its properties. The concept of the condition number of a matrix is introduced, and are found bounds for it by using the matrix norms. Finally, it is explained the iterative algorithm of the Refinement, showing the power of this one, when it is solved a system of linear equations ill conditioned.
Palavras-chave : Matrix norm; condition numbers; Refinement Method.