Before revision:  When is required capital a continuous function of the financial position? Can the eligible asset be chosen in such a way that for every financial position the corresponding required capital is lower than if any other asset had been chosen?
After revision:  When is required capital a continuous function of the corresponding capital requirement dominates the capital requirement corresponding any other choice of the eligible asset be chosen in such a way that for every financial position the corresponding required capital is lower than if any other asset had been chosen?