※ Zoom회의 ID: 834 4638 3103 / 암호: 539343 In this lecture series, I will give a historical overview of zeta functions and L-functions following the footsteps of Euler, Dirichlet, Riemann, Dedekind, and many others, culminating with the Langlands program. Along the way I will touch upon interesting interactions with analysis, algebra, number theory, and algebraic geometry.