43 citations · 44 across the 4 of their papers we have counts for
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math.OA2004
Hyperinvariant subspaces for some B-circular operators
Ken Dykema
We show that if A is a Hilbert-space operator, then the set of all projections onto hyperinvariant subspaces of A, which is contained in the von Neumann algebra vN(A) that is gener…
math.OA2003
Ellipsoidal tight frames and projection decompositions of operators
Ken Dykema, Dan Freeman, Keri Kornelson +3
We prove the existence of tight frames whose elements lie on an arbitrary ellipsoidal surface within a real or complex separable Hilbert space H, and we analyze the set of attainab…
math.OA2002★ 1 cited
DT-operators and decomposability of Voiculescu's circular operator
Ken Dykema, Uffe Haagerup
The DT-operators are introduced, one for every pair (μ,c) consisting of a compactly supported Borel probability measure μon the complex plane and a constant c>0. These are operator…