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Disjoint edges in geometric graphs. (English) Zbl 0692.05037
Summary: Answering an old question in combinatorial geometry, we show that any configuration consisting of a set $$V$$ of $$n$$ points in general position in the plane and a set of $$6n-5$$ closed straight line segments whose endpoints lie in $$V$$, contains three pairwise disjoint line segments.

##### MSC:
 05C35 Extremal problems in graph theory
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##### References:
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