I propose a model where, all else equal, a tyrannical regime is limited by the population density of the area under tyrannical rule. Both when the population density is near zero and when it is very large, the costs of enforcing tyranny approach infinity—thereby tyranny is effectively zero. At...

In this paper we show how theorems of Borsuk-Ulam and Tucker can be used to construct a consensus-halving: a division of an object into two portions so that each of n people believe the portions are equally split. Moreover, the division takes at most n cuts, which is best possible. This extends...

This paper identifies the optimal options of Krabi's coastal land use to facilitate the final planning decision. Through compromise programming approach, the optimization models with respect to the weights assigned to two objectives of maximizing the net private and environmental benefits are...