Unapologetically diving into the mathematics of reinforcement learning. We explore the policy gradient theorem and policy gradient methods. Icon by Freepik https://www.freepik.com/icon/light-bu... 0:00 The Simple Example 3:14 Causal Dependency Graph 7:42 What is a Policy? 10:32 Motivation of Policy Gradient Methods 15:58 The Full Math 28:04 Summary