%0 Journal Article %T Riemann surfaces out of paper %A Andr¨¦ de Carvalho %A Toby Hall %J Mathematics %D 2011 %I arXiv %R 10.1112/plms/pdt020 %X Let S be a surface obtained from a plane polygon by identifying infinitely many pairs of segments along its boundary. A condition is given under which the complex structure in the interior of the polygon extends uniquely across the quotient of its boundary to make S into a closed Riemann surface. When this condition holds, a modulus of continuity is obtained for a uniformizing map on S. %U http://arxiv.org/abs/1110.4011v1