Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Minkowski curvelets and wave equations   We define a new type of wavelet frame adapted to the study of wave equations,
that we call Minkowski curvelets, by reference to the curvelets introduced by
Cand\`es, Demanet and Donoho. These space-time, strongly anisotropic,
directional wavelets have a Fourier support which does not intersect the
light-cone; their maximal size is proportional to the inverse of the distance
to the light-cone. We show that the matrix of the Green kernel of the
Klein-Gordon operator on Minkowski space-time has a nearly exponential
off-diagonal decay in this basis.

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The categories of this paper are: astro-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-lat
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The categories of this paper are: physics
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The categories of this paper are: q-bio
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The categories of this paper are: hep-ph
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The categories of this paper are: q-fin
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The categories of this paper are: chao-dyn
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The categories of this paper are: funct-an
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The categories of this paper are: chem-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: acc-phys
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The categories of this paper are: solv-int
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The categories of this paper are: stat
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The categories of this paper are: nucl-ex
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The categories of this paper are: nucl-th