Numerical Approximation of Exact Controls for Waves

Name: Numerical Approximation of Exact Controls for Waves
Brand: Springer, Berlin
SKU: 9781461458074
Price: 214.72 PLN
Availability: InStock

Autor: Sylvain Ervedoza, Enrique Zuazua

Język:

Oprawa: Miękka

Wydawca: Springer, Berlin

Dostępność: Dostępna u dostawcy

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This book is devoted to fully developing and comparing the two main approaches to the numerical appr...

Informacje o książce

Autor

Sylvain Ervedoza, Enrique Zuazua

Język

Angielski

Oprawa

Książka - Miękka

Data wydania

2012

strony

122

EAN

9781461458074

ISBN

1461458072

Enbook ID

01428381

Wydawca

Springer, Berlin

Waga

225

Wymiary

157 x 238 x 11

Pełny opis

This book is devoted to fully developing and comparing the two main approaches to the numerical approximation of controls for wave propagation phenomena: the continuous and the discrete. This is accomplished in the abstract functional setting of conservative semigroups.The main results of the work unify, to a large extent, these two approaches, which yield similaralgorithms and convergence rates. The discrete approach, however, gives not only efficient numerical approximations of the continuous controls, but also ensures some partial controllability properties of the finite-dimensional approximated dynamics. Moreover, it has the advantage of leading to iterative approximation processes that converge without a limiting threshold in the number of iterations. Such a threshold, which is hard to compute and estimate in practice, is a drawback of the methods emanating from the continuous approach. To complement this theory, the book provides convergence results for the discrete wave equation when discretized using finite differences and proves the convergence of the discrete wave equation with non-homogeneous Dirichlet conditions. The first book to explore these topics in depth, "On the Numerical Approximations of Controls for Waves" has rich applications to data assimilation problems and will be of interest to researchers who deal with wave approximations.

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