The tertiarization, or perhaps more accurately, the deindustrialization of the economy has left deep scars on cities. It is evident not only in the industrial wastelands and empty factory buildings scattered throughout the urban landscape, but also in the income and social structures of cities....

This paper proposes a new method of calculating the proportion of permanently impoverished persons among persons in poverty as a whole. The paper shows that the widely used Shorrocks-Index for decomposing permanent and transitory inequality can also be acquired to describe poverty. This method...