The paper develops a theoretical rationale for a non-linear relationship between the level of democracy and government spending. A model is presented showing why and how political participation influences the spending behavior of opportunistic governments that can choose an optimal combination...

Central Bank Digital Currencies (CBDCs) enable negative interest rates. A game is analyzed between a central bank (accounting for the government's interest) and a representative household choosing to consume, hold CBDC, or hold non-CBDC. The central bank chooses negative interest rate when it...

This article's motivation is to understand the volatile Bitcoin price increase. The objective is to develop price estimation methods. The methodology is to present five differential equation models estimated against the 23 July 2010-21 June 2021 Bitcoin data. The findings are that Gompertz...

The paper analyzes the efficiency of deploying false targets as part of a defense strategy. It is assumed that the defender has a single object that can be destroyed by the attacker. The defender distributes its resource between deploying false targets and protecting the object from outside...

A production and conflict (P&C) model and a rent-seeking (RS) model are compared for one group, two groups and K groups. Adding a new agent enlarges the pie in the P&C model, but causes the fixed size pie to be allocated on one more rent seeker in the RS model. The total production or rent is...