  We derive conditions on the products of stochastic matrices guaranteeing the
existence of a unique limit invariant distribution. Belying our approach is the
hereby defined notion of restricted triangulated Laman graphs. The main idea is
the following: to each triangle in the graph, we assign a stochastic matrix.
Two matrices can be adjacent in a product only if their corresponding triangles
share an edge in the graph. We provide an explicit formula for the limit
invariant distribution of the product in terms of the individual stochastic
matrices.
