Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on: arXiv:2008.08305 "Scallop Theorem and Swimming at the
  Mesoscale" by M. Hubert, O. Trosman, Y. Collard, A. Sukhov, J. Harting, N.
  Vandewalle, and A.-S. Smith, Phys. Rev. Letters \vc{126}, 224501 (2021)   The expression for the mean swimming velocity of the Oseen two-sphere model
derived in the Letter [arXiv:2008.08305] is compared with an exact one derived
earlier, as well as one derived in first harmonic approximation. The latter is
found to be a very accurate approximation to the exact result.

22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph