Graph colouring, the assignment of colours to the vertices of a graph so that no two adjacent vertices share the same colour, represents a canonical NP-hard combinatorial optimisation problem with ...

For a year and a half, Yves Valerus was working a stable, full time job with a regular weekly schedule, a set hourly rate and benefits. The Haitian Creole-English interpreter helps people bridge ...

Australia has stressed the importance of freedom of navigation after a powerful Indonesian minister suggested three South-East Asian nations could follow Iran's lead and put a toll on ships passing ...