Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cosmicflows-3: Two Distance$-$Velocity Calculators   Tools are provided at the Extragalactic Distance Database website that
provide relationships between the distances and velocities of galaxies based on
smoothed versions of the velocity fields derived by the Cosmicflows program.

4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin