The authors extend E. Maskin's results on Nash implementation. First, they establish a condition that is both necessary and sufficient for Nash implementability if there are three or more agents (the case covered by Maskin's sufficiency result). Second--and more important--they examine the two-agent case (for which there existed no general sufficiency results). The two-agent model is the leading case for applications to contracting and bargaining. For this case, too, they establish a condition that is both necessary and sufficient. The authors use their theorems to derive simpler sufficiency conditions that are applicable in a wide variety of economic environments. Copyright 1990 by The Econometric Society.

ABSTRACT Claims ultimately awarded to shareholders of firms in reorganization were examined for a sample of 30 filings under the 1978 Bankruptcy Reform Act. We measured the amount paid to shareholders in excess of that which they would have received under the absolute priority rule and found that this amount represents, on average, 7.6% of the total awarded to all claimants. Evidence is also reported that common share values reflect a significant proportion of value ultimately received in violation of absolute priority, suggesting that deviations from the rule were expected by the equity markets.

ABSTRACT This study re‐examines the earlier finding of Alderson and Chen (1986a) that financial markets do not consider excess pension assets in determining share prices and that significant increases in shareholder wealth occur when an overfunded pension plan is terminated. The results document that specific event‐time contamination (corporate restructuring announcements) provides the driving force for all the earlier findings.