Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bonus Yangian Symmetry for the Planar S-Matrix of N=4 Super Yang-Mills   Recent developments in the determination of the planar S-matrix of N=4 Super
Yang-Mills are closely related to its Yangian symmetry. Here we provide
evidence for a yet unobserved additional symmetry: the Yangian level-one
helicity operator.

18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga