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\centerline{\large \bf Matching Upper and Lower Bounds for Maxwellian
Molecules}



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\centerline{Eric Carlen}
\centerline{\it Georgia Tech, USA}
\centerline{e-mail {\tt carlen@math.gatech.edu}}

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\centerline{Xugang Lu}
\centerline{\it Tshinghua University, Bejing, China}
\centerline{e-mail {\tt lu@math.gatech.edu}}
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  We present sharp lower bounds on the the rate of convergence of
Wild sums, and matching upper bounds.

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{\bf  Presented by Eric Carlen }
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