The authors study pure strategy Bertrand equilibria in a duopoly in which two firms produce a homogeneous good with convex cost functions, and they seek to maximize the weighted sum of their absolute and relative profits. They show that there exists a range of the equilibrium price in...

This study derives pure strategy Bertrand equilibria in a duopoly in which two firms produce a homogeneous good with convex cost functions and seek to maximize the weighted sum of their absolute and relative profits. The study shows that there exists a range of equilibrium prices in duopolistic...

According to the concept of "fiscal discipline" public finance must be balanced, at least in the long run. The school of thought known as MMT (Modern Monetary Theory), which has been gaining attention recently, rejects this idea. However, it is often pointed out that MMT lacks the mathematical...

Japanese Abstract: 近年MMT（Modern Monetary...