[This book summarizes a line of research that maps certain classical problems of discrete mathematics and operations research, such as the Hamiltonian cycle and the Travelling Salesman problems, into convex domains where continuum analysis can be carried out., This book summarizes a line of research that maps certain classical problems of discrete mathematics and operations research, such as the Hamiltonian cycle and the Travelling Salesman problems, into convex domains where continuum analysis can be carried out.]