Notes, Comments and Preliminary results Mar 31 2003 Yasuhito Tanaka   A necessary and sufficient condition for Wilson's impossibility theorem with strict non-imposition   Abstract  Contact Information  Citation  Full Text  -  Note   Mar 18 2002 Yasuhito Tanaka   Strategy-proofness of social choice functions and non-negative association property with continuous preferences   Abstract  Contact Information  Citation  Full Text  -  Preliminary Result   Dec 01 2001 Yasuhito Tanaka   Generalized monotonicity and strategy-proofness for non-resolute social choice correspondences   Abstract  Contact Information  Citation  Full Text  -  Preliminary Result   Oct 10 2001 Yasuhito Tanaka   Generalized monotonicity and strategy-proofness: A note   Abstract  Contact Information  Citation  Full Text  -  Preliminary Result