On causality in commutant lifting theorem. I |
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Authors: | Caixing Gu |
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Affiliation: | (1) Department of Mathematics, Indiana University, 47405 Bloomington, IN, USA |
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Abstract: | Two functionals (A) and for an operatorA were introduced in [11] for the study of causality in commutant lifting theory. In this paper we give sufficient and necessary conditions for in a special case. We prove that in this case, and we show by some examples related to nonlinear system control that is the best constant in our inequality. |
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Keywords: | Primary 47A20 Secondary 93B35 93C05 |
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