JOHN ROEMER is Elizabeth S. and A. Varick Professor of Political Science and Economics at Yale University, USA. His recent books include Political Competition, Equality of Opportunity, Theories of Distributive Justice and Democracy, Education and Equality. He is a fellow of the Econometric Society and a corresponding fellow of the British Royal Academy. KOTARO SUZUMURA is Professor of Economic Systems Analysis at the Institute of Economic Research, Hitotsubashi University, Japan. His books include Rational Choice, Collective Decisions and Social Welfare

• Introduction; J.Roemer & K.Suzumura PART 1: EQUITY AMONG OVERLAPPING GENERATIONS Pension Contributions and Capital Accumulation; T.Ihori Equity and Efficiency in Overlapping Generations Economies; T.Shinotsuka, K.Suga, K.Suzumura & K.Tadenuma Social Security Pensions and Interregional Equity: The Japanese Case; N.Takayama PART 2: RANKING INFINITE UTILITY STREAMS A New Equity Condition for Infinite Utility Streams and the Possibility of Being Paretian; G.B.Asheim, T.Mitra & B.Tungodden Possibility Theorems for Equitably Aggregating Infinite Utility Systems; K.Basu & T.Mitra On the Existence of Paretian Social Welfare Quasi-orderings for Infinite Utility Streams with Extended Anonymity; T.Mitra & K.Basu Pareto Principle and Intergenerational Equity: Immediate Impatience, Universal Indifference and Impossibility; Y.Xu PART 3: INTERGENERATIONAL EVALUATIONS Formal Welfarism and Intergenerational Equity; C.d'Aspremont Intertemporal Social Evaluation; C.Blackorby, W.Bossert & D.Donaldson Intergenerational Fairness; M.Fleurbaey Person-Affecting Paretian Egaliterianism with Variable Population Size; B.Tungodden & P.Vallentyne PART 4: SUSTAINABILITY AND HUMAN DEVELOPMENT Intergenerational Justice and Sustainability under the Leximin Ethic; J.Roemer Intergenerational Justice, International Relations, and Sustainability; J.Roemer & R.Veneziani Intergenerational Equity and Human Development; J.Silvestre PART 5: LONG-RUN ISSUES OF INTERGENERATIONAL EQUITY Toward a Just Savings Principle; N.Van Long Normative Approaches to the Issues of Global Warming: Responsibility and Compensation; K.Suzumura & K.Tadenuma Fundamental Incompatibility Between Economic Efficiency, Intergenerational Equity and Sustainability; N.Yoshihara Index

JOHN ROEMER is Elizabeth S. and A. Varick Professor of Political Science and Economics at Yale University, USA. His recent books include Political Competition, Equality of Opportunity, Theories of Distributive Justice and Democracy, Education and Equality. He is a fellow of the Econometric Society and a corresponding fellow of the British Royal Academy. KOTARO SUZUMURA is Professor of Economic Systems Analysis at the Institute of Economic Research, Hitotsubashi University, Japan. His books include Rational Choice, Collective Decisions and Social Welfare

• Introduction; J.Roemer & K.Suzumura PART 1: EQUITY AMONG OVERLAPPING GENERATIONS Pension Contributions and Capital Accumulation; T.Ihori Equity and Efficiency in Overlapping Generations Economies; T.Shinotsuka, K.Suga, K.Suzumura & K.Tadenuma Social Security Pensions and Interregional Equity: The Japanese Case; N.Takayama PART 2: RANKING INFINITE UTILITY STREAMS A New Equity Condition for Infinite Utility Streams and the Possibility of Being Paretian; G.B.Asheim, T.Mitra & B.Tungodden Possibility Theorems for Equitably Aggregating Infinite Utility Systems; K.Basu & T.Mitra On the Existence of Paretian Social Welfare Quasi-orderings for Infinite Utility Streams with Extended Anonymity; T.Mitra & K.Basu Pareto Principle and Intergenerational Equity: Immediate Impatience, Universal Indifference and Impossibility; Y.Xu PART 3: INTERGENERATIONAL EVALUATIONS Formal Welfarism and Intergenerational Equity; C.d'Aspremont Intertemporal Social Evaluation; C.Blackorby, W.Bossert & D.Donaldson Intergenerational Fairness; M.Fleurbaey Person-Affecting Paretian Egaliterianism with Variable Population Size; B.Tungodden & P.Vallentyne PART 4: SUSTAINABILITY AND HUMAN DEVELOPMENT Intergenerational Justice and Sustainability under the Leximin Ethic; J.Roemer Intergenerational Justice, International Relations, and Sustainability; J.Roemer & R.Veneziani Intergenerational Equity and Human Development; J.Silvestre PART 5: LONG-RUN ISSUES OF INTERGENERATIONAL EQUITY Toward a Just Savings Principle; N.Van Long Normative Approaches to the Issues of Global Warming: Responsibility and Compensation; K.Suzumura & K.Tadenuma Fundamental Incompatibility Between Economic Efficiency, Intergenerational Equity and Sustainability; N.Yoshihara Index

JOHN ROEMER is Elizabeth S. and A. Varick Professor of Political Science and Economics at Yale University, USA. His recent books include Political Competition, Equality of Opportunity, Theories of Distributive Justice and Democracy, Education and Equality. He is a fellow of the Econometric Society and a corresponding fellow of the British Royal Academy. KOTARO SUZUMURA is Professor of Economic Systems Analysis at the Institute of Economic Research, Hitotsubashi University, Japan. His books include Rational Choice, Collective Decisions and Social Welfare

• Introduction; J.Roemer & K.Suzumura PART 1: EQUITY AMONG OVERLAPPING GENERATIONS Pension Contributions and Capital Accumulation; T.Ihori Equity and Efficiency in Overlapping Generations Economies; T.Shinotsuka, K.Suga, K.Suzumura & K.Tadenuma Social Security Pensions and Interregional Equity: The Japanese Case; N.Takayama PART 2: RANKING INFINITE UTILITY STREAMS A New Equity Condition for Infinite Utility Streams and the Possibility of Being Paretian; G.B.Asheim, T.Mitra & B.Tungodden Possibility Theorems for Equitably Aggregating Infinite Utility Systems; K.Basu & T.Mitra On the Existence of Paretian Social Welfare Quasi-orderings for Infinite Utility Streams with Extended Anonymity; T.Mitra & K.Basu Pareto Principle and Intergenerational Equity: Immediate Impatience, Universal Indifference and Impossibility; Y.Xu PART 3: INTERGENERATIONAL EVALUATIONS Formal Welfarism and Intergenerational Equity; C.d'Aspremont Intertemporal Social Evaluation; C.Blackorby, W.Bossert & D.Donaldson Intergenerational Fairness; M.Fleurbaey Person-Affecting Paretian Egaliterianism with Variable Population Size; B.Tungodden & P.Vallentyne PART 4: SUSTAINABILITY AND HUMAN DEVELOPMENT Intergenerational Justice and Sustainability under the Leximin Ethic; J.Roemer Intergenerational Justice, International Relations, and Sustainability; J.Roemer & R.Veneziani Intergenerational Equity and Human Development; J.Silvestre PART 5: LONG-RUN ISSUES OF INTERGENERATIONAL EQUITY Toward a Just Savings Principle; N.Van Long Normative Approaches to the Issues of Global Warming: Responsibility and Compensation; K.Suzumura & K.Tadenuma Fundamental Incompatibility Between Economic Efficiency, Intergenerational Equity and Sustainability; N.Yoshihara Index