Nonsingularity and $P$-matrices.
Applications of Mathematics, Tome 35 (1990) no. 3, pp. 215-219.

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New proofs of two previously published theorems relating nonsingularity of interval matrices to $P$-matrices are given.
DOI : 10.21136/AM.1990.104405
Classification : 15A03, 15A57, 65F99, 65G10, 65G30
Mots-clés : nonsingular matrices; $P$-matrices 
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Rohn, Jiří. Nonsingularity and $P$-matrices.. Applications of Mathematics, Tome 35 (1990) no. 3, pp. 215-219. doi : 10.21136/AM.1990.104405. https://geodesic-test.mathdoc.fr/articles/10.21136/AM.1990.104405/

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