Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strichartz and Smoothing Estimates for Schroedinger Operators with Large
  Magnetic Potentials in R^3   We show that the time evolution of the operator $H = -\Delta + i(A \cdot
\nabla + \nabla \cdot A) + V$ in R^3 satisfies Strichartz and smoothing
estimates under suitable smoothness and decay assumptions on A and V but
without any smallness assumptions. We require that zero energy is neither an
eigenvalue nor a resonance.

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The categories of this paper are: math-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: quant-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: cmp-lg
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The categories of this paper are: stat
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: gr-qc
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The categories of this paper are: chem-ph
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The categories of this paper are: alg-geom