Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonuniform fast Fourier transforms with nonequispaced spatial and
  frequency data and fast sinc transforms   In this paper we study the nonuniform fast Fourier transform with
nonequispaced spatial and frequency data (NNFFT) and the fast sinc transform as
its application. The computation of NNFFT is mainly based on the nonuniform
fast Fourier transform with nonequispaced spatial nodes and equispaced
frequencies (NFFT). The NNFFT employs two compactly supported, continuous
window functions. For fixed nonharmonic bandwidth, it is shown that the error
of the NNFFT with two sinh-type window functions has an exponential decay with
respect to the truncation parameters of the used window functions. As an
important application of the NNFFT, we present the fast sinc transform. The
error of the fast sinc transform is estimated, too.

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The categories of this paper are: solv-int
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The categories of this paper are: math-ph
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio