On the Strong Parrott Completion Problem

Mihaly Bakonyi, Hugo J. Woerdeman
1993 Proceedings of the American Mathematical Society  
In this paper we parametrize all solutions of the Strong Parrott problem and obtain necessary and sufficient conditions for existence of isometric, coisometric, and unitary solutions.
doi:10.2307/2159179 fatcat:qnjbfrq4wzcqlfexokkg3uha4a