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\def\Rd{{\rm I}\!{\rm R}^d}
\def\RR{{\rm I}\!{\rm R}^2}
\def\R3{{\rm I}\!{\rm R}^3}
\def\N{{\rm I}\!{\rm N}}
\def\Q{\bbbq}
\def\R{{\rm I}\!{\rm R}}
\def\eps{{\varepsilon}}
\def\equi{{~\Longleftrightarrow~}}





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\bf
Computational Geometry and Geometric Computing\\
Eric Berberich\\Kurt Mehlhorn\\ Michael Sagraloff\\ \smallskip

Exercise %
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2
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\bf Winter 2009/2010\\
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Sample Solution by PUT YOUR NAME HERE
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\subsection*{Motivation}

We extend our study of the convex hull algorithm. 

\subsection*{A Third $O(n \log n)$ algorithm}


\subsection*{Examples of Nonrobustness}

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