Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A directional uncertainty principle for periodic functions   In this paper we introduce a notion of a directional uncertainty product for
multivariate periodic functions. It measures a localization of a function along
a particular direction. We study properties of the uncertainty product and give
an example of well localized multivariate periodic Parseval wavelet frames.

6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
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The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
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The categories of this paper are: nucl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: gr-qc
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The categories of this paper are: physics
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg