Vasily Dolgushev, Temple University
I will introduce the action of the groupoid of GT-shadows on child's drawings and discuss how this is related to the action of the Grothendieck-Teichmueller group and the action of the absolute Galois group (of rational numbers) on child's drawings. My talk is loosely based on this paper. If time permits, I will mention an open question motivated by the paper by J. Ellenberg.