Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Toledo invariants of Higgs bundles on elliptic surfaces associated to
  base orbifolds of Seifert fibered homology 3-spheres   To each connected component in the space of semisimple representations from
the orbifold fundamental group of the base orbifold of a Seifert fibered
homology 3-sphere into the Lie group U(2,1), we associate a real number called
the "orbifold Toledo invariant." For each such orbifold, there exists an
elliptic surface over it, called a Dolgachev surface. Using the theory of Higgs
bundles on these Dolgachev surfaces, we explicitly compute all values taken on
by the orbifold Toledo invariant.

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The categories of this paper are: alg-geom
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The categories of this paper are: quant-ph
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The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
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The categories of this paper are: hep-ph
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The categories of this paper are: cs
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The categories of this paper are: econ
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The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-th
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The categories of this paper are: supr-con
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-ex
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The categories of this paper are: plasm-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: ao-sci