This paper revisits how coexistence of money and bonds can make a society better off. For this purpose, a model is constructed in which payment instruments matter for settling real transactions and savings instruments matter because agents differ in how they discount future utility. Because...

Mathematical Interest Theory provides an introduction to how investments grow over time. This is done in a mathematically precise manner. The emphasis is on practical applications that give the reader a concrete understanding of why the various relationships should be true. Among the modern...