Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Preconditioned Random Toeplitz Operators   The solution of Hermitian positive definite random Toeplitz systems $Ax=b$ by
the preconditioned conjugate gradient method for the Strang circulant
preconditioner is studied. We established the foundation for this method by
extending the work of Brown-Halmos on Toeplitz operators and Grenander-Szeg\"o
on Teoplitz form to random Teoplitz operators.

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The categories of this paper are: alg-geom
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The categories of this paper are: gr-qc
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-th
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The categories of this paper are: nucl-th
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The categories of this paper are: solv-int
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The categories of this paper are: ao-sci
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The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-lat
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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: econ
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The categories of this paper are: comp-gas
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The categories of this paper are: acc-phys