Geodesic
Decomposition of unitary linear groups into products of free factors
Fundamentalʹnaâ i prikladnaâ matematika, Tome 18 (2013) no. 4, pp. 33-39 
E. I. Bunina; D. V. Trushin; M. V. Tsvetkov. Decomposition of unitary linear groups into products of free factors. Fundamentalʹnaâ i prikladnaâ matematika, Tome 18 (2013) no. 4, pp. 33-39. http://geodesic.mathdoc.fr/item/FPM_2013_18_4_a2/
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     url = {http://geodesic.mathdoc.fr/item/FPM_2013_18_4_a2/}
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Voir la notice de l'article provenant de la source Math-Net.Ru

In this paper, we construct noncommutative algebras over a square-closed field such that the unitary linear groups over these algebras decompose to nontrivial free products. In particular, we give an example when the elementary unitary subgroup belongs to one of these factors.

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