[isabelle] New AFP article: Menger's Theorem



Menger's Theorem
Christoph Dittmann

We present a formalization of Menger's Theorem for directed and undirected graphs in Isabelle/HOL. This well-known result shows that if two non-adjacent distinct vertices u, v in a directed graph have no separator smaller than n, then there exist n internally vertex-disjoint paths from u to v. The version for undirected graphs follows immediately because undirected graphs are a special case of directed graphs.

https://www.isa-afp.org/entries/Menger.shtml

A theorem with a name - enjoy!

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