This represents the diagrams of two large separable permutations, taken uniformly at random: for each \(i\), there is a dot at coordinates \( (i,\sigma(i))\). It converges towards a Brownian limiting object, that we called

*The Brownian limit of separable permutations*, with Frédérique Bassino, Mathilde Bouvel, Lucas Gerin and Adeline Pierrot, submitted, arXiv.