Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Finite Element Approximation for a Class of Caputo Time-Fractional
  Diffusion Equations   We develop a fully discrete scheme for time-fractional diffusion equations by
using a finite difference method in time and a finite element method in space.
The fractional derivatives are used in Caputo sense. Stability and error
estimates are derived. The accuracy and efficiency of the presented method is
shown by conducting two numerical examples.

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The categories of this paper are: astro-ph
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The categories of this paper are: funct-an
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The categories of this paper are: gr-qc
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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: chem-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: cond-mat
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The categories of this paper are: mtrl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: ao-sci