Created by Karl Marx. Marxism is not Communism, its what communism based its ideas on. Communism was starlins dream for russia, Karl Marx, lived in the early 1800's and did write the communist manifesto, for the communist party,that was 1848, based on his marxist ideas along time before starlin.
In mathematics, we call a visual representation of a network a graph. A graph is a collection of points, called vertices, and line segments connecting those points, called edges. The number of edges that belong to a vertex is called the degree of the vertex.
Quantum graph. In mathematics and physics, a quantum graph is a linear, network-shaped structure of vertices connected by bonds (or edges) with a differential or pseudo-differential operator acting on functions defined on the bonds. Such systems were first studied by Linus Pauling as models of free electrons in organic molecules in the 1930s.