Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Geometrical Structures of M-Theory   N=(2,1) heterotic string theory provides clues about hidden structure in
M-theory related to string duality; in effect it geometrizes some aspects of
duality. The program whereby one may deduce this hidden structure is outlined,
together with the results obtained to date. Speculations are made as to the
eventual shape of the theory. Talk presented at Strings '96 (Santa Barbara,
July 20-25, 1996).

1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph