Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Tip of the TOE   Using standard methods from string theory, this paper presents a
comprehensive survey about the most important aspects of the theory of sand.
Special interest is put on the examination of the sand-wind duality and the
interaction of ordinary (non-supersymmetric) sand with the heat field of the
earth, as solution of the field inequalities of a stone. This will lead us, in
a natural way, to completely new insights into the theory of sandstorms.

11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga