Progress in relativistic three-hadron scattering from lattice QCD

Lattice QCD offers a systematic pathway to numerically compute the resonant hadronic spectrum from first principles. A set of integral equations connects the short-distance dynamics computed from lattice QCD to on-shell infinite-volume scattering amplitudes. In this talk, I will discuss recent progress in determining three-hadron scattering amplitudes from lattice QCD, focusing on constructing scattering relations from unitarity and our recent study on numerical solutions of the integral equations.