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Table 1.

Classification of the arXiv disciplines. The classification scheme is based on that used on the arXiv.org (2021) website (a detailed description is presented in Supplementary Table S1).

DisciplineNo. of eprintsarXiv subject classification
astro-ph 257,864 Astrophysics 
comp-sci 386,507 Computer Science 
cond-mat 263,506 Condensed Matter Physics 
hep 286,840 High Energy Physics (Theory, Phenomenology, Lattice, Experiment) 
math 428,621 Mathematics (including: Mathematical Physics) 
oth-phys 387,878 Other Physics (including: Nuclear Theory and Experiment, General Relativity and Quantum Cosmology, Quantum Physics, Nonlinear Sciences) 
DisciplineNo. of eprintsarXiv subject classification
astro-ph 257,864 Astrophysics 
comp-sci 386,507 Computer Science 
cond-mat 263,506 Condensed Matter Physics 
hep 286,840 High Energy Physics (Theory, Phenomenology, Lattice, Experiment) 
math 428,621 Mathematics (including: Mathematical Physics) 
oth-phys 387,878 Other Physics (including: Nuclear Theory and Experiment, General Relativity and Quantum Cosmology, Quantum Physics, Nonlinear Sciences) 
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