IMA Journal of Mathematical Control and Information 1987 4(1):41-54; doi:10.1093/imamci/4.1.41
© 1987 by Institute of Mathematics and its Applications
Bilaterally Canonical Normal Symmetric Realizations
JlNGBO WU
Department of Computer and System Sciences, Nankai University Tianjin, China
Discrete-time systems which can be realized on Hilbert spaces are considered. Conditions for the existence of symmetric realizations, especially normal symmetric realizations, are given. The spectral minimality problem is also discussed.

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