Geodesic
Isomorphisms of the unitary group over a ring
Fundamentalʹnaâ i prikladnaâ matematika, Tome 12 (2006) no. 2, pp. 55-70 
A. S. Ismagilova. Isomorphisms of the unitary group over a ring. Fundamentalʹnaâ i prikladnaâ matematika, Tome 12 (2006) no. 2, pp. 55-70. http://geodesic.mathdoc.fr/item/FPM_2006_12_2_a3/
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Voir la notice de l'article provenant de la source Math-Net.Ru

We describe isomorphisms of unitary groups over associative rings with $1/2$ that contain a compact system of idempotents.

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[2] Zelmanov E. I., “Izomorfizm lineinykh grupp nad assotsiativnym koltsom”, Sib. mat. zhurn., 26:4 (1985), 49–67 | MR