Good afternoon all, I'm taking a linear algebra course this semester, and upon entering the topic of 'Applications of Matrix Operations', my professor has given our class the opportunity to earn some extra credit points by writing a paragraph or two on the application of stochastic matrices in any particular field we like. I'd really like to find some kind of material on some applications of stochastic matrices in cosmology, but unfortunately a large majority of the content out there is locked out from public access without shelling out a hefty fee to some organization or institute. Could any professionals out there give just a small handful of examples of these kinds of matrices in cosmology or astrophysics? Or even better, shoot a link or two to some interesting tidbits of info on this topic? It would be very highly appreciated. Thanks, and enjoy your upcoming weekends!