A line connects vertices that appear in the same row, column, or subgrid. This translation allowed the mathematicians to use mathematical tools developed in graph theory to understand sudoku.

We start with a few basic definitions and results of the graph theory; more details can be found in [6]. 2. Graphs. A graph is a collection of vertices (or nodes, in our terminology) visually ...

The work deals with reliability modelling and evaluation of reparable power system using graph theory and Reliability Block Diagram (RBD). Increasing in electrical energy demand and insufficient ...

Virtual Enterprises can be considered as one of the most promising paradigms for future enterprises. The main characteristics of Virtual Enterprises are the distributed and parallel business process ...