Topological Susceptibility under Gradient Flow Héctor Mejía-Díaz, Wolfgang Bietenholz, Krzysztof Cichy, Philippe de Forcrand, Arthur Dromard, Urs Gerber and Ilya Orson Sandoval EPJ Web Conf., 175 (2018) 11024 Published online: 26 March 2018 DOI: 10.1051/epjconf/201817511024