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math.AP2016
Strictly Hyperbolic Equations with Coefficients Low-Regular in Time and Smooth in Space
Massimo Cicognani, Daniel Lorenz
We consider the Cauchy problem for strictly hyperbolic -th order partial differential equations with coefficients low-regular in time and smooth in space. It is well-known that…
math.AP2005
A dyadic decomposition approach to a finitely degenerate hyperbolic problem
Massimo Cicognani, Daniele Del Santo, Michael Reissig
We use the Littlewood-Paley decomposition technique to obtain a -well-posedness result for a weakly hyperbolic equation with a finite order of degeneration