Geodesic
On commutative systems of nonselfadjoint unbounded linear operators
Žurnal matematičeskoj fiziki, analiza, geometrii, Tome 5 (2009) no. 3, pp. 275-295 
V. A. Zolotarev. On commutative systems of nonselfadjoint unbounded linear operators. Žurnal matematičeskoj fiziki, analiza, geometrii, Tome 5 (2009) no. 3, pp. 275-295. http://geodesic.mathdoc.fr/item/JMAG_2009_5_3_a2/
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Voir la notice de l'article provenant de la source Math-Net.Ru

For a commutative system of nonselfadjoint unbounded operators $A_1$, $A_2$ the concept of colligation and associated open system is given. For these open systems, the consistency conditions are established and the conservation laws are obtained.

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