Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The cone of moving curves of a smooth Fano three- or fourfold   We describe the closed cone of moving curves of smooth Fano three- and
fourfolds by giving finitely many equations that cut out the cone. The
equations are induced by the exceptional divisors of divisorial contractions
and by nef divisors on birational models obtained by sequences of flips.The
results presented here are part of the author's Ph.D. thesis, written under the
supervision of Stefan Kebekus.

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The categories of this paper are: comp-gas
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The categories of this paper are: plasm-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: eess
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The categories of this paper are: physics
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The categories of this paper are: nlin
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The categories of this paper are: math-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: adap-org
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-lat
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The categories of this paper are: gr-qc
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The categories of this paper are: quant-ph
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The categories of this paper are: stat