The product is a textbook titled “Interest Rate Models – Theory and Practice: With Smile, Inflation” authored by Damiano Brigo and Fabio Mercurio. Published in 2006 by Springer Berlin / Heidelberg as part of the Springer Finance Series, the book covers topics in interest rate modeling, investments, securities, derivatives, and probability and statistics. With a total of 982 pages, the revised edition includes practical applications and theoretical insights in the field of applied mathematics, making it a valuable resource for students and professionals in business, economics, and mathematics.