Geodesic
Extreme preservers of maximal column rank inequalities of matrix sums over semirings
Czechoslovak Mathematical Journal, Tome 58 (2008) no. 3, pp. 693-703.

Voir la notice de l'article provenant de la source Czech Digital Mathematics Library

We characterize linear operators that preserve sets of matrix ordered pairs which satisfy extreme properties with respect to maximal column rank inequalities of matrix sums over semirings.
Classification : 15A03, 15A04, 15A45
Keywords: linear operator; rank inequality; maximal column rank. 
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     title = {Extreme preservers of maximal column rank inequalities of matrix sums over semirings},
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     pages = {693--703},
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     zbl = {1174.15001},
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Song, Seok-Zun; Park, Kwon-Ryong. Extreme preservers of maximal column rank inequalities of matrix sums over semirings. Czechoslovak Mathematical Journal, Tome 58 (2008) no. 3, pp. 693-703. http://geodesic.mathdoc.fr/item/CMJ_2008__58_3_a7/