Re-coinage implies that old coins are declared invalid and exchanged for new ones at fixed exchange rates and dates. Empirical evidence shows that re-coinage could occur as often as twice a year within a currency area in the Middle Ages. The exchange fee at re-coinage worked as a monetary tax...

Although the leaf-thin bracteates are the most fragile coins in monetary history, they were the main coin type for almost two centuries in large parts of medieval Europe. The usefulness of the bracteates can be linked to the contemporary monetary taxation policy. Medieval coins were frequently...

In medieval Europe, old coins were frequently declared invalid and exchanged for new ones at fixed rates and dates. Here, the question of whether and when such re-coinage was applied in medieval Sweden is analyzed against the historical record. A theory of how short-lived coinage systems work is...

Gesell taxes on money holdings have received attention in recent decades as a way of alleviating the zero lower bound on interest rates. Less known is that such a tax was the predominant method used to generate seigniorage in large parts of medieval Europe for around two centuries. When the...

In medieval Europe, old coins were frequently declared invalid and exchanged for new ones at fixed rates and dates. Here, the question of whether and when such re-coinage was applied in medieval Sweden is analyzed against the historical record. A theory of how short-lived coinage systems work is...

Although the leaf-thin bracteates are the most fragile coins in monetary history, they were the main coin type for almost two centuries in large parts of medieval Europe. The usefulness of the bracteates can be linked to the contemporary monetary taxation policy. Medieval coins were frequently...

This paper analyzes the effect of an increase in patent scope on R&D and innovation. It presents a model where patent scope affects an entrant firm's technology choice and thereby creates a trade-off between R&D investments and wasteful duplication of R&D. The model predicts that an increase in...

There is widespread concern, especially in certain feminist circles, that a market-oriented economic system, or capitalism, disfavors women. This could take many forms, such as lower wages for the same type of work, reduced career opportunities, disparities in ownership and the upholding of...

This paper analyzes effects of stronger patent rights on R&D and innovation. It presents a model where the scope of a patent affects an entrant firm's technology choice and thereby the amount of wasteful R&D duplication. The model predicts that negative effects of duplication can be sufficiently...