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Construction of Gevrey functions with compact support using the Bray-Mandelbrojt iterative process and applications to the moment method in control theory

Lissy, Pierre (2017), Construction of Gevrey functions with compact support using the Bray-Mandelbrojt iterative process and applications to the moment method in control theory, Mathematical Control and Related Fields, 7, 1, p. 21 - 40. 10.3934/mcrf.2017002

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Type
Article accepté pour publication ou publié
External document link
https://hal.archives-ouvertes.fr/hal-01245852
Date
2017
Journal name
Mathematical Control and Related Fields
Volume
7
Number
1
Published in
Paris
Pages
21 - 40
Publication identifier
10.3934/mcrf.2017002
Metadata
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Author(s)
Lissy, Pierre
Abstract (EN)
In this paper, we construct some interesting Gevrey functions of order α for every α > 1 with compact support by a clever use of the Bray-Mandelbrojt iterative process. We then apply these results to the moment method, which will enable us to derive some upper bounds for the cost of fast boundary controls for a class of linear equations of parabolic or dispersive type that partially improve the existing results proved in [P. Lissy, On the Cost of Fast Controls for Some Families of Dispersive or Parabolic Equations in One Space Dimension SIAM J. Control Optim., 52(4), 2651-2676]. However this construction fails to improve the results of [G. Tenenbaum and M. Tucsnak, New blow-up rates of fast controls for the Schrödinger and heat equations, Journal of Differential Equations, 243 (2007), 70-100] in the precise case of the usual heat and Schrödinger equation.
Subjects / Keywords
Gevrey functions; moment method; cost of the control; test; Linear parabolic equations; linear dispersive equations; cost of controllability

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