Academic Editor: R. L. Pouso
Copyright © 2011 Ondřej Došlý and Šárka Pechancová. This is an open access article distributed under the
Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
We establish a conjugacy criterion for a symplectic difference system by means of the concept of a phase of any basis of this symplectic system. We also describe a construction of a symplectic difference system whose recessive solution has the prescribed number of generalized zeros in