most citedPositive Realness of a Transfer Function Neither Implies Nor is Implied by the External Positivity of their Associate Realizations

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math.DS2008

Asymptotic Behavior of Systems involving Delays: Preliminary Results

M. De la Sen

This paper investigates the relations between the particular eigensolutions of a limiting functional differential equation of any order, which is the nominal (unperturbed) linear a…

math.DS2008

Stability of Delayed Systems Modeled by Fractional Models

M. De la Sen

The paper discusses linear fractional representations of parameter-dependent nonlinear systems with dynamics defined by real rational nonlinearities and a finite set of point delay…

math.DS2008

Dynamic Physical Systems: Energy Balances and Stability Issues

M. De la Sen

This paper discusses some links properties of operators with the well- known physical concepts of hyperstability, passivity, energy dissipativeness and conservativeness with positi…