Lecture
This lecture discusses the completion of a field, specifically the algebraic closure of a field. The instructor explains how to think about the algebraic closure of a field, showing that it is algebraically closed. The lecture covers the concept of rings, ideals, and roots of unity in the context of field completion. Additionally, the lecture explores convergence of series in the completion of a field, emphasizing the convergence and divergence of functions in this setting. The instructor provides insights into the continuity of functions in the completion of a field and illustrates the properties of continuous functions in this context.