Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the problem of a physical "theory of everything"   No quantitative theory describing all physical phenomena can be made if any
arbitrary standard spacetime structure is assumed. This statement is a
consequence of transforming the Peano arithmetic axioms into sentences with a
physical content.

14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex