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Discrete Ingham type inequalities with a weakened gap condition

Paola Loreti·Vilmos Komornik
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Abstract

We establish discrete Ingham type and Haraux type inequalities for exponential sums satisfying a weakened gap condition. They enable us to obtain discrete simultaneous observability theorems for systems of vibrating strings or beams.

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Paola Loreti, Vilmos Komornik. 2007-02-09. Discrete Ingham type inequalities with a weakened gap condition. https://arxiv.org/abs/math/0702259

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