13 citations · 36 across the 22 of their papers we have counts for
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math.FA2010
The Schur-Horn theorem for operators with three point spectrum
John Jasper
We characterize the set of diagonals of the unitary orbit of a self-adjoint operator with three points in the spectrum. Our result gives a Schur-Horn theorem for operators with thr…
math.FA2010
Orthonormal dilations of non-tight frames
Marcin Bownik, John Jasper, Darrin Speegle
We establish dilation theorems for non-tight frames with additional structure, i.e., frames generated by unitary groups of operators and projective unitary representations. This ge…