Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Introduction to Higgs Bundles via Harmonic Maps   This survey studies equivariant harmonic maps arising from Higgs bundles. We
explain the non-abelian Hodge correspondence and focus on the role of
equivariant harmonic maps in the correspondence. With the preparation, we
review current progress towards some open problems in the study of equivariant
harmonic maps.

31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
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The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas