Geodesic
Checking nonsingularity of tridiagonal matrices
The electronic journal of linear algebra, Tome 6 (1999-2000), pp. 11-19.

Voir la notice de l'article provenant de la source Electronic Library of Mathematics

Summary: I. Bar-On, B. Codenotti, and M. Leoncini presented a linear time algorithm for checking the nonsingularity of general tridiagonal matrices [BIT, 36:206, 1996]. A detailed implementation of their algorithm, with some extensions to possibly reducible matrices, is further described in the present paper.
Classification : 65F15
Keywords: tridiagonal matrices, error analysis 
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     title = {Checking nonsingularity of tridiagonal matrices},
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Bar-On, Ilan. Checking nonsingularity of tridiagonal matrices. The electronic journal of linear algebra, Tome 6 (1999-2000), pp. 11-19. http://geodesic.mathdoc.fr/item/ELA_1999-2000__6__a1/