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1996•Bulletin of the Australian Mathematical SocietyOpen access

Remarks on bounded solutions of linear systems

Elena Topuzu, Paul Topuzu

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Abstract

In the case of continuous time systems with bounded operators (coefficients) the following result, of Perron type is well known: “The linear differential system ẋ = Ax + f(t) has, for every function f continuous and bounded on ℝ, a unique bounded solution on ℝ, if and only if the spectrum of the operator A has no points on the imaginary axis”.

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In the case of continuous time systems with bounded operators (coefficients) the following result, of Perron type is well known: “The linear differential system ẋ = Ax + f(t) has, for every function f continuous and bounded on ℝ, a unique bounded solution on ℝ, if and only if the spectrum of the operator A has no points on the imaginary axis”.

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Available abstract

In the case of continuous time systems with bounded operators (coefficients) the following result, of Perron type is well known: “The linear differential system ẋ = Ax + f(t) has, for every function f continuous and bounded on ℝ, a unique bounded solution on ℝ, if and only if the spectrum of the operator A has no points on the imaginary axis”.

Key concepts: Bounded function, Mathematics, Bounded operator, Bounded inverse theorem, Operator (biology), Spectrum (functional analysis), Continuous function (set theory), Finite-rank operator

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