We use a simple graphical approach to represent Social Welfare Functions that satisfy Independence of Irrelevant Alternatives and Anonymity. This approach allows us to provide simple and illustrative proofs of May's Theorem, of variants of classic impossibility results, and of a recent result on...

Russia has seen even higher oil windfall in the past few months, which translates into likely fiscal surpluses this year and next. The government should not miss the opportunity provided by a large oil windfall to substantially improve its long-term fiscal position, further reduce inflation,...