13 citations · 36 across the 22 of their papers we have counts for
4 papers · 1 filter
Kirkman Equiangular Tight Frames and Codes
John Jasper, Dustin G. Mixon, Matthew Fickus
An equiangular tight frame (ETF) is a set of unit vectors in a Euclidean space whose coherence is as small as possible, equaling the Welch bound. Also known as Welch-bound-equality…
The Schur-Horn theorem for operators with finite spectrum
Marcin Bownik, John Jasper
We characterize the set of diagonals of the unitary orbit of a self-adjoint operator with a finite spectrum. Our result extends the Schur-Horn theorem from a finite dimensional set…
Constructive proof of the Carpenter's Theorem
Marcin Bownik, John Jasper
We give a constructive proof of Carpenter's Theorem due to Kadison. Unlike the original proof our approach also yields the real case of this theorem.
Diagonals of self-adjoint operators with finite spectrum
Marcin Bownik, John Jasper
Given a finite set we characterize the diagonals of self-adjoint operators with spectrum . Our result extends the Schur-Horn theorem from a finite dimensional set…