Lecture
This lecture covers the determination of the CKM matrix elements through various decays, such as leptonic, semi-leptonic, and neutrino scattering. It discusses the theoretical uncertainties associated with meson decays and the experimental challenges in dealing with neutrinos. The lecture also delves into particle-antiparticle mixing, wave-function evolution, decay rates, and CP violation in the kaon and B-meson systems.