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math.FA2013
Equivalence after extension and matricial coupling coincide with Schur coupling, on separable Hilbert spaces
Sanne ter Horst, Andre C. M. Ran
It is known that two Banach space operators that are Schur coupled are also equivalent after extension, or equivalently, matricially coupled. The converse implication, that operato…
math.FA2013
Rational matrix solutions to the Leech equation: The Ball-Trent approach revisited
Sanne ter Horst
Using spectral factorization techniques, a method is given by which rational matrix solutions to the Leech equation with rational matrix data can be computed explicitly. This metho…