Geodesic
Subnormality of Banach algebra
Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 1 (2008), pp. 10-17.

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In this paper von Neumann–Fuglede–Putnam’s asymptotic theorem is proved for subnormal elements in complex Banach algebra in topology of wide classes. 
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I. M. Karakhanyan; M. I. Karakhanyan. Subnormality of Banach algebra. Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 1 (2008), pp. 10-17. http://geodesic.mathdoc.fr/item/UZERU_2008_1_a1/

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