Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generalization of a Ramanujan identity   The Euler product for the Landau--Ramanujan constant could have motivated a
curious identity by Ramanujan that appears in his notebooks two times. This
observation involves a square root and the first four prime numbers of the form
$4n+3$, i.e., $3, 7, 11, 19$. Berndt asks whether Ramanujan's identity is an
isolated result, or if there are other identities of this type. With this work
we would like to give a possible answer to Berndt's question.

9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org