Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Integral formula for the Bessel function of the first kind   In this paper, we prove a new integral representation for the Bessel function
of the first kind $J_\mu(z)$, which holds for any $\mu,z\in\mathbb{C}$.

29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom