Graph colouring remains a central topic in graph theory, providing the mathematical framework for assigning colours to the elements of a graph under specific constraints. In particular, the colouring ...

Maria you are giving the annual Hamilton Lecture soon in Dublin, what will you talk about? I will talk about simple problems or puzzles that relate to parties, doughnuts and colouring and explain how ...

Have you ever tried to do the brainteaser below, where you have to connect the dots to make the outline of a house in one continuous stroke without going back over your lines? Or perhaps you've ...