Explore advanced concepts in partial differential equations in this comprehensive lecture by Giovanni Bellettini. Delve into complex mathematical theories and problem-solving techniques as the renowned mathematician presents the 28th installment of his series on partial differential equations. Gain insights into the application of these equations in various scientific and engineering fields, and enhance your understanding of mathematical modeling. Suitable for graduate-level mathematics students and researchers, this in-depth lecture offers a rigorous examination of key topics in the field of partial differential equations.