Hyperbolic Systems with Relaxation :
نویسنده
چکیده
Well{posedness of a constant{coeecient, rst{order, hyperbolic system is equivalent to the existence of a symmetrizer. This symmetrizer is usually constructed in Fourier space and generally depends on the wave number. Nevertheless, many physical systems have constant symmetrizers which deene a quadratic entropy. This paper presents physically relevant systems with relaxation which are stiiy well{posed, but no constant symmetrizer and no quadratic, strictly convex entropy exists.
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تاریخ انتشار 2007