Edges 75 Diameter 7 | Vertices 50 Radius 6 Girth 5 | |
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In the mathematical field of graph theory, the Szekeres snark is a snark with 50 vertices and 75 edges. It was the fifth known snark, discovered by George Szekeres in 1973.
As a snark, the Szekeres graph is a connected, bridgeless cubic graph with chromatic index equal to 4. The Szekeres snark is non-planar and non-hamiltonian but is hypohamiltonian.
Another well known snark on 50 vertices is the Watkins snark discovered by John J. Watkins in 1989.
References
Szekeres snark Wikipedia(Text) CC BY-SA