This paper studies revenue-maximizing allocation mechanisms for multiple goods where the buyer's utility can depend non-linearly in his type. We point out that despite strictly increasing virtual utilities, the allocation rule obtained via pointwise optimization may fail to be increasing and...

This paper studies revenue-maximizing allocation mechanisms for multiple goods where the buyeriacute;s utility can depend non-linearly in his type. We point out that despite strictly increasing virtual utilities, the allocation rule obtained via pointwise optimization may fail to be increasing...