Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Duality in supersymmetric gauge theories   In these lectures we discuss various aspects of gauge theories with extended
$N=2$ and $N=4$ supersymmetry that are at the basis of recently found exact
results. These results include the exact calculation of the low energy
effective action for the light degrees of freedom in the $N=2$ super Yang-Mills
theory and the conjecture, supported by some checks, that the $N=4$ super
Yang-Mills theory is dual in the sense of Montonen-Olive.

22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci