Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A fast directional continuous spherical wavelet transform   A fast algorithm for Antoine and Vandergheynst's (1998) directional
continuous spherical wavelet transform (CSWT) is presented. Computational
requirements are reduced by a factor of O(\sqrt{N}), when N is the number of
pixels on the sphere. The spherical Mexican hat wavelet Gaussianity analysis of
the WMAP 1-year data performed by Vielva et al. (2003) is reproduced and
confirmed using the fast CSWT. The proposed extension to directional analysis
is inherently afforded by the fast CSWT algorithm.

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The categories of this paper are: math-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
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The categories of this paper are: supr-con
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The categories of this paper are: acc-phys
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-lat
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The categories of this paper are: funct-an
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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
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The categories of this paper are: adap-org
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The categories of this paper are: hep-ex
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The categories of this paper are: q-alg
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-th
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The categories of this paper are: math