Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On Waring's problem: some consequences of Golubeva's method   We investigate sums of mixed powers involving two squares, two cubes, and
various higher powers, concentrating on situations inaccessible to the
Hardy-Littlewood method.

17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom