09-23-2021-0603 - JEW Julius Peter Christian Petersen (middle east, daneish, zealans, norway, nigger, jew, aziv, amcan, father of amcan, lattaint, etc.; - CHRISTOPHER WALSH FACE COLOR GENE CONTRIBUTANT)

Julius Peter Christian Petersen (16 June 1839, Sorø, West Zealand – 5 August 1910, Copenhagen) was a Danishmathematician. His contributions to the field of mathematics led to the birth of graph theory.

Julius Petersen.

https://en.wikipedia.org/wiki/Julius_Petersen