  The problem under consideration is the synthesis of a distributed controller
for a nonlinear network composed of input affine systems. The objective is to
achieve exponential convergence of the solutions. To design such a feedback
law, methods based on contraction theory are employed to render the
controller-synthesis problem scalable and suitable to use distributed
optimization. The nature of the proposed approach is constructive, because the
computation of the desired feedback law is obtained by solving a convex
optimization problem. An example illustrates the proposed methodology.
