The study of such graphs is called graph theory. Engineers need to find planarity in a graph when, for example, they are designing a computer chip without a crossed wire.

Each 9-by-9 sudoku grid is composed of nine 3-by-3 subgrids. Initially, some of these 81 squares contain a number, from 1 through 9, but others do not. The object is to fill in the empty squares ...

A mathematical abstraction of this type of setting is called a graph. The present course will study basic concepts, properties and applications of graphs. This will include a discussion of several ...

When examining data on a graph, there are certain things to look for, such as the overall trend, the rate of change, and any anomalies . When describing what a graph shows, it is best to deal with ...

Graph theory isn’t enough. The mathematical language for talking about connections, which usually depends on networks — vertices (dots) and edges (lines connecting them) — has been an invaluable way ...

This paper presents a non-technical exposition of graph theory (more particularly, the theory of directed graphs or digraphs), followed by a survey of the literature on applications of graph theory in ...

Bao-Xuan Zhu ᵃ, Qinglin Lu ᵃ, Unimodality of the Independence Polynomials of Some Composite Graphs, Filomat, Vol. 31, No. 3 (2017), pp. 629-637 ...