Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: hankl: A lightweight Python implementation of the FFTLog algorithm for
  Cosmology   We introduce hankl, a lightweight Python implementation of the FFTLog
algorithm for Cosmology. The FFTLog algorithm is an extension of the Fast
Fourier Transform (FFT) for logarithmically spaced periodic sequences. It can
be used to efficiently compute Hankel transformations, which are paramount for
many modern cosmological analyses that are based on the power spectrum or the
2-point correlation function multipoles. The code is well-tested, open source,
and publicly available.

37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci