This lecture covers the analysis of potential derivatives, focusing on the Green theorem and the concept of simple curves. It delves into the calculation of potentials and the adherence of curves in open domains, emphasizing the importance of positively oriented edges. The instructor explains the process of parameterizing curves and the significance of adherence in various scenarios, such as regular and bounded domains. The lecture concludes with practical examples and exercises to solidify the understanding of potential derivatives and adherence in different contexts.