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The general commutant extension problem. (English) Zbl 1239.47012

Summary: The topic of this paper is an open question in operator theory which can be traced back to T. J. Stieltjes’ solution to the moment problem, and which touches several fields of pure and applied functional analysis [cf. T. J. Stieltjes, OEuvres Complètes. Collected papers, Vol. II (G. van Dijk, ed.), Springer-Verlag, Berlin (1993; Zbl 0779.01010)].

MSC:

47A57 Linear operator methods in interpolation, moment and extension problems
47A20 Dilations, extensions, compressions of linear operators
47A62 Equations involving linear operators, with operator unknowns

Citations:

Zbl 0779.01010
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