Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measuring Bulk Flows in Large Scale Surveys   We follow a formalism presented by Kaiser to calculate the variance of bulk
flows in large scale surveys. We apply the formalism to a mock survey of Abell
clusters \'a la Lauer \& Postman and find the variance in the expected bulk
velocities in a universe with CDM, MDM and IRAS--QDOT power spectra. We
calculate the velocity variance as a function of the 1--D velocity dispersion
of the clusters and the size of the survey.

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The categories of this paper are: patt-sol
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The categories of this paper are: bayes-an
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The categories of this paper are: nucl-ex
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
1
The categories of this paper are: cs
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The categories of this paper are: hep-lat
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The categories of this paper are: supr-con
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The categories of this paper are: chem-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: econ
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The categories of this paper are: acc-phys
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The categories of this paper are: q-bio
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The categories of this paper are: quant-ph
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The categories of this paper are: nucl-th
3
The categories of this paper are: physics