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A note on weakly hyperbolic equations with analytic principal part
2014
Journal of Mathematical Analysis and Applications
In this paper we show how to include low order terms in the C^∞ well-posedness results for weakly hyperbolic equations with analytic time-dependent coefficients. This is achieved by doing a different reduction to a system from the previously used one. We find the Levi conditions such that the C^∞ well-posedness continues to hold.
doi:10.1016/j.jmaa.2013.09.011
fatcat:sovypend65dhtltntla47wbmse