Jeff Erickson 0001, Yipu Wang. Topologically Trivial Closed Walks in Directed Surface Graphs. In Gill Barequet, Yusu Wang, editors, 35th International Symposium on Computational Geometry, SoCG 2019, June 18-21, 2019, Portland, Oregon, USA. Volume 129 of LIPIcs, Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik, 2019. [doi]
Abstract is missing.