Coefficients with unbounded derivatives
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Massimo Cicognani
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Article
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2004
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John Wiley and Sons
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English
โ 212 KB
## Abstract We are concerned with the problem of determining the sharp regularity of the coefficients with respect to the time variable __t__ in order to have a wellโposed Cauchy problem in __H__^โ^ or in Gevrey classes for linear or quasilinear hyperbolic operators of higher order. We use and mix