Julius Petersen

Julius Petersen might refer to different individuals, but one notable figure is a mathematician known for his contributions to various areas of mathematics, particularly in graph theory and topology. He introduced the Petersen graph, which is a specific graph that has interesting properties and is often discussed in the context of graph theory. The Petersen graph is a 3-regular graph (meaning each vertex has degree 3) with 10 vertices and 15 edges.