Carleman estimates, observability inequalities, and null controllability for interior degenerate nonsmooth parabolic equations / Genni Fragnelli and Dimitri Mugnai.

By:

Fragnelli, Genni [author]

Contributor(s):

Mugnai, Dimitri [author]

Material type: Text

TextSeries: Memoirs of the American Mathematical Society ; v 242, no 1146.Publication details: Providence : American Mathematical Society, 2016.Description: v, 84 pages ; 25 cmISBN:

9781470419547 (softback : alk. paper)

Subject(s):

DDC classification:

510 23 Am512

Contents:

* Chapter 1. Introduction* Chapter 2. Mathematical tools and preliminary results* Chapter 3. Carleman estimate for non degenerate parabolic problems with non smooth coefficient* Chapter 4. Carleman estimate for degenerate non smooth parabolic problems* Chapter 5. Observability inequalities and application to null controllability* Chapter 6. Linear and Semilinear Extensions* Chapter 7. Final Comments* Appendix A. Rigorous derivation of Lemma 3.5.

Summary: The authors consider a parabolic problem with degeneracy in the interior of the spatial domain, and they focus on observability results through Carleman estimates for the associated adjoint problem. The novelties of the present paper are two. First, the coefficient of the leading operator only belongs to a Sobolev space. Second, the degeneracy point is allowed to lie even in the interior of the control region, so that no previous result can be adapted to this situation; however, different cases can be handled, and new controllability results are established as a consequence.

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Item type	Current library	Call number	Status	Date due	Barcode	Item holds
Books	ISI Library, Kolkata	510 Am512 (Browse shelf(Opens below))	Available		137659

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Includes bibliographical references.

The authors consider a parabolic problem with degeneracy in the interior of the spatial domain, and they focus on observability results through Carleman estimates for the associated adjoint problem. The novelties of the present paper are two. First, the coefficient of the leading operator only belongs to a Sobolev space. Second, the degeneracy point is allowed to lie even in the interior of the control region, so that no previous result can be adapted to this situation; however, different cases can be handled, and new controllability results are established as a consequence.

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