Geodesic
A simple proof of Whitney's Theorem on connectivity in graphs
Mathematica Bohemica, Tome 136 (2011) no. 1, pp. 25-26.

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In 1932 Whitney showed that a graph $G$ with order $n\geq 3$ is 2-connected if and only if any two vertices of $G$ are connected by at least two internally-disjoint paths. The above result and its proof have been used in some Graph Theory books, such as in Bondy and Murty's well-known Graph Theory with Applications. In this note we give a much simple proof of Whitney's Theorem.
DOI : 10.21136/MB.2011.141446
Classification : 05C38, 05C40, 05C45
Keywords: connectivity; graph 
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Zhao, Kewen. A simple proof of Whitney's Theorem on connectivity in graphs. Mathematica Bohemica, Tome 136 (2011) no. 1, pp. 25-26. doi : 10.21136/MB.2011.141446. http://geodesic.mathdoc.fr/articles/10.21136/MB.2011.141446/

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