Carl Hierholzer

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Carl Hierholzer is a German mathematician who get PhD from Ruprecht-Karls-Universität Heidelberg in 1865. He proved that a graph has an Eulerian cycle if and only if it is connected and every vertex has an even degree.

[edit] References

• Hierholzer, C., "Über die Möglichkeit, einen Linienzug ohne Wiederholung und ohne Unterbrechnung zu umfahren", Mathematische Annalen 6 (1873), 30-32.