Geodesic
Automorphisms of the semigroup of invertible matrices with nonnegative elements over commutative partially ordered rings
Fundamentalʹnaâ i prikladnaâ matematika, Tome 14 (2008) no. 2, pp. 69-100 
E. I. Bunina; P. P. Semenov. Automorphisms of the semigroup of invertible matrices with nonnegative elements over commutative partially ordered rings. Fundamentalʹnaâ i prikladnaâ matematika, Tome 14 (2008) no. 2, pp. 69-100. http://geodesic.mathdoc.fr/item/FPM_2008_14_2_a3/
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Voir la notice de l'article provenant de la source Math-Net.Ru

We describe automorphisms of the semigroup $G_n(R)$ of invertible matrices with nonnegative coefficients in the case where $R$ is a commutative partially ordered ring containing $\mathbb Q$ and $n\ge3$.

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