User:IIbeomYoo28/sandbox

Discoverer：Euler
The Euler circuit was discovered by the mathematician Euler while studying the famous Koenigsberg Seven Bridges problem in Germany. If a path includes each edge exactly once, the path is called an Euler path. If a circuit is an Euler path, it is called an Euler circuit.[1] A graph with an Euler circuit is called an Euler graph. A graph with an Euler path but without an Euler circuit is called a semi-Euler graph.

Reference List
[1] Biggs, N., Lloyd, E. K., & Wilson, R. J. (1986). Graph Theory, 1736-1936. Oxford University Press.