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Convex compact subset of R^2
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almostsure
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Feb17-12, 07:35 PM
P: 1
Let $X$ be a compact and convex subset of $\mathbb{R^2}$
Let $a^1, a^2 \in X$ such that $a^j = (a^j_1, a^j_2)$, $j=1,2$
Is $c= \sum_{i=1}^2 \mathbb{I}_{ i=j} a^j_i \in X \quad ?$
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