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arxiv: 1407.0997 · v1 · pith:TKW2HWUHnew · submitted 2014-07-03 · 🧮 math.FA · math.AP

Gabor wave packets and evolution operators

classification 🧮 math.FA math.AP
keywords gaborequationsevolutionhyperbolicanalysisapplyclasscoefficients
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We perform a Gabor analysis for a large class of evolution equations with constant coefficients. We show that the corresponding propagators have a very sparse Gabor matrix, displaying off-diagonal exponential decay. The results apply to hyperbolic, weakly hyperbolic and parabolic equations. Some numerical experiments are provided.

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