Solving sudoku puzzles may not require mathematics, but mathematicians have found plenty to say about the popular brainteasers.

The main challenge here lies in devising a mathematically acceptable proof of this impossibility, which is where the foundations for what we today know as graph theory.

Graph matching, set covering, and partitioning problems are both theoretically and practically important in decision support Systems. Numerous decision support applications have been modeled as graph ...

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 ...