Solução exata de sistemas de equações lineares determinados utilizado a aritmética residual.

Abstract

The present study, "Exact Solution of Systems Determined Linear Equations Using Residual Arithmetic ", consists of the application of residual arithmetic to the solution of systems of linear equations, whose data correspond to exact number (integers). Knowing that an exact solution exists, it was desirable to find it. In order to do this, various existent implementations were studied and some variants of the algorithms found in references were experimentally implemented. A comparative study was carried out using direct conventional methods likes: Elimination of Gauss and Gauss-Jordan and the algorithms published by ACM (Association for Computing Machinery), was carried out, constituted of two case studies: 1. Algorithm 406, EXACT [HOWELL, 1971]: Exact Solution of Linear Equations Using Residual Arithmetic; 2. Algorithm 522, ESOLVE [CABAY and LAM, 1977]: Congruence Techniques for the Exact Solution of Integer Systems of Linear Equations. Finally, the results obtained are presented. ix