Klaus Wagner
![Klaus Wagner (right) and [[Frank Harary]] at Oberwolfach, 1972](https://upload.wikimedia.org/wikipedia/commons/f/fa/Wagner_and_Harary.jpg)
Klaus Wagner (March 31, 1910 – February 6, 2000) was a German mathematician known for his contributions to graph theory.
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Klaus Wagner (March 31, 1910 – February 6, 2000) was a German mathematician known for his contributions to graph theory.
Provided by Wikipedia