Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Smooth Lyapunov 1-forms   We find conditions which guarantee that a given flow on a closed smooth
manifold admits a smooth Lyapunov one-form lying in a prescribed de Rham
cohomology class. These conditions are formulated in terms of Schwartzman's
asymptotic cycles of the flow.

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The categories of this paper are: atom-ph
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The categories of this paper are: funct-an
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The categories of this paper are: chao-dyn
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The categories of this paper are: patt-sol
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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-th
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The categories of this paper are: q-bio
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The categories of this paper are: bayes-an
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The categories of this paper are: adap-org
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The categories of this paper are: physics
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The categories of this paper are: acc-phys
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The categories of this paper are: math-ph
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The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga