The H-graph with equal masses in terms of multiple polylogarithms

The initial phase of the inspiral process a binary system producing gravitational waves can be described by perturbation theory. At third post-Minkowskian order two-loop double box graph, known as H-graph contributes. We consider case where two objects making up have equal masses. express all master integrals related to equal-mass weight four in terms multiple polylogarithms. provide numerical program which evaluates physical regions with arbitrary precision.