Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Self-Dual Yang-Mills: Symmetries and Moduli Space   Geometry of the solution space of the self-dual Yang-Mills (SDYM) equations
in Euclidean four-dimensional space is studied. Combining the twistor and
group-theoretic approaches, we describe the full infinite-dimensional symmetry
group of the SDYM equations and its action on the space of local solutions to
the field equations. It is argued that owing to the relation to a holomorphic
analogue of the Chern-Simons theory, the SDYM theory may be as solvable as 2D
rational conformal field theories, and successful nonperturbative quantization
may be developed. An algebra acting on the space of self-dual conformal
structures on a 4-space (an analogue of the Virasoro algebra) and an algebra
acting on the space of self-dual connections (an analogue of affine Lie
algebras) are described. Relations to problems of topological and N=2 strings
are briefly discussed.

3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys