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Encyclopedia > Julius Petersen

Julius Peter Christian Petersen (June 16, 1839 - August 5, 1910) was a Danish mathematician.


He made early contributions to the field of graph theory. In 1892, he proposed a graph, known today as the "Petersen Graph".


He published a systematic treatment of geometrical constructions (with compasses and straightedge) in 1880. A French translation was reprinted in 1990.


  Results from FactBites:
 
Petersen biography (1540 words)
Julius Petersen's father was Jens Petersen, who worked as a dyer, and his mother was Anna Cathrina Petersen who was born in Wiuff.
Petersen never returned to cryptography; this seems to be another instance of a problem that must have occupied him intensely for a period, until he found a satisfactory solution and moved on to something else.
Petersen was also a founder member of the Danish Mathematical Society, which came into existence in 1873, and he remained a very active member of the Society.
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