Leonhard Euler
Leonhard Euler was a Swiss mathematician and physicist. He spent most of his life in Russia and Germany. Euler made important discoveries in fields like calculus and topology. He also made many of the words used in math today.
Konigsberg Bridge Problem
The Seven Bridges of Königsberg is a historically notable problem in mathematics. Its negative resolution by Leonhard Euler in 1736 laid the foundations of graph theory and prefigured the idea of topology
The problem was to devise a walk through the city that would cross each of those bridges once and only once.
What are his statements to determine if a network is transferable?
If there are no odd nodes and all nodes are even this means that the network can be drawn without taking your pen off the paper, starting and finishing at the same place.
If there are two odd nodes it means the network is transferable but you must start at one of the odd nodes and finish on the other odd nodes.