Găvruţă, Paşc; Suciu, Nicolae A characterization of subnormal pairs. (English) Zbl 0943.47018 Gheondea, A. (ed.) et al., Operator theory, operator algebras and related topics. Proceedings of the 16th international conference on operator theory, Timişoara, Romania, July 2-10, 1996. Bucharest: The Theta Foundation. 149-157 (1997). Summary: We give new conditions of characterization for subnormality of a pair of operators and more generally, of a semigroup of operators on a Hilbert space.For the entire collection see [Zbl 0917.00013]. Cited in 1 Review MSC: 47B20 Subnormal operators, hyponormal operators, etc. 47D03 Groups and semigroups of linear operators 47A57 Linear operator methods in interpolation, moment and extension problems 47A20 Dilations, extensions, compressions of linear operators Keywords:subnormal pairs of operators; subnormal semigroup; extensions Citations:Zbl 0917.00013 PDFBibTeX XMLCite \textit{P. Găvruţă} and \textit{N. Suciu}, in: Operator theory, operator algebras and related topics. Proceedings of the 16th international conference on operator theory, Timişoara, Romania, July 2--10, 1996. Bucharest: The Theta Foundation. 149--157 (1997; Zbl 0943.47018)