Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Maintaining a Library of Formal Mathematics   The Lean mathematical library mathlib is developed by a community of users
with very different backgrounds and levels of experience. To lower the barrier
of entry for contributors and to lessen the burden of reviewing contributions,
we have developed a number of tools for the library which check proof
developments for subtle mistakes in the code and generate documentation suited
for our varied audience.

24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph