Geodesic
Convexity and weak closedness of the image of operator balls under linear-fractional transformations
Matematičeskie zametki, Tome 67 (2000) no. 2, pp. 302-304.

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     title = {Convexity and weak closedness of the image of operator balls under linear-fractional transformations},
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T. Ya. Azizov; V. K. Kiriakidi. Convexity and weak closedness of the image of operator balls under linear-fractional transformations. Matematičeskie zametki, Tome 67 (2000) no. 2, pp. 302-304. http://geodesic.mathdoc.fr/item/MZM_2000_67_2_a14/

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[2] Azizov T. Ya., Iokhvidov I. S., Osnovy teorii lineinykh operatorov v prostranstvakh s indefinitnoi metrikoi, Nauka, M., 1986

[3] Azizov T. Ya., Ukr. matem. zh., 41:7 (1989) | MR