Graphs are everywhere. In discrete mathematics, they are structures that show the connections between points, much like a public transportation network. Mathematicians have long sought to develop ...

Herzberg and Murty used techniques from graph theory to show that a mathematically simple formula exists for the number of possible solutions to a given sudoku puzzle.

A natural question Graphs are relatively simple mathematical objects — abstract representations of networks — that arise frequently in physics, chemistry and computer science.

Power graphs provide an innovative way to visualise and analyse the algebraic structure of finite groups. In a power graph, the elements of a finite group serve as vertices, and an edge is drawn ...