document.write("« Chord Shortening Flow and a Theorem of Lusternik and Schnirelmann. (arXiv:1707.04014v1 [math.DG])");document.write(" | ");document.write("Coherence for monoidal $G$-categories and braided $G$-crossed categories. (arXiv:1604.01679v2 [math.QA] UPDATED) »");