The product is a textbook titled “Applied Partial Differential Equations” authored by J. David Logan. This 3rd edition was released in 2015 under the Springer International Publishing A&G, with a total of 289 pages. The book covers a wide range of topics related to science, mathematics, and the life sciences, including the physical origins of partial differential equations, classification of PDEs, and applications in the life sciences like age-structured models and stability analysis. With detailed illustrations and explanations, this textbook is suitable for undergraduate students and professionals interested in the general and specialized field of differential equations.