37 citations · 78 across the 9 of their papers we have counts for
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math.FA2012
Normal matrix compressions
John Holbrook, Nishan Mudalige, Rajesh Pereira
The recently developed theory of higher--rank numerical ranges originated in problems of error correction in quantum information theory but its mathematical implications now includ…
quant-ph2012★ 16 cited
Restricted numerical shadow and geometry of quantum entanglement
Zbigniew Puchała, Jarosław Adam Miszczak, Piotr Gawron +3
The restricted numerical range of an operator acting on a -dimensional Hilbert space is defined as a set of all possible expectation values of this operator among p…