Jakub Pachocki, Liam Roditty, Aaron Sidford, Roei Tov, Virginia Vassilevska Williams. Approximating Cycles in Directed Graphs: Fast Algorithms for Girth and Roundtrip Spanners. In Artur Czumaj, editor, Proceedings of the Twenty-Ninth Annual ACM-SIAM Symposium on Discrete Algorithms, SODA 2018, New Orleans, LA, USA, January 7-10, 2018. pages 1374-1392, SIAM, 2018. [doi]
Abstract is missing.