We are pleased to help celebrate Roy Radner's 75th birthday, by issuing in one volume the papers that originally appeared in his honor in two special issues of Review of Economic Design (Vol. 6/2 and 6/3-4, 2001). Through his truly original ideas and lucid writing, Roy has influenced and guided the theory community for decades. Many colleagues and students have found their own work shaped and improved by Roy's wide-ranging curiosity, his encouragement, and his keen insights. In soliciting contributions to the Review of Economic Design Radner issues, we decided to approach his former students...

Motivation. That elegant fiction the competitive equilibrium seems still to dominate the frontiers of theoretical microeconomics. We may think of it in a general way as a state of affairs wherein economic agents, responding "rationally" to annoWlced prices, make choices which are consistent and feasible. The prices may also be described as "taken": for one reason or another the agents who respond to them consider them as given. The existence of such a state, its optimality, its robustness against free bargaining among agents when there are many of them, its Wliqueness, its stability when...

89 TABLE 5 USE OR PLANNED USE OF MAJOR ENGINES IN AIR FORCE AND NAVY AIRCRAFT a Engine Air Force Aircraft Navy Aircraft F-80, T-33, XF-92, YB-61, AJ2, F9F-7, TV-I, J-33 YB-62, F-94 (A, B), TM- T2-V, P4M-I 61 ( tactical missile) X-3, XF-88 F3D, F2H, F6U, F7U J-34 F-84 (B, C, D, E, G, H) J-35 FJ-I B-45, XB-51, XF-9J, B-36, J-47 B-47, F-86 (D, F, K) J-48 F-94C F9F J-57 B-52, YB-60, F-lOO, A3D, F4D, F8U F-I02A, F-I0l (A, B), SNARK, F-105A, F-I07, KC-135A, B-57D, X-16 F-84F, B-57 FIIF, A4D, FJ-3, J-65 FJ-4, F9F YQ-l, YQ-2, T-37 J-69 SNARK, YF-89E, B-66 J-71 F-I01, F-I02B, F-I05, J-75 F-I07 F8U,...