Under mild conditions including the possibility of compensation by monetary
transfer, this paper shows that all versions of the Pareto Principle, viz.
, the Pareto Indifference, the Weak Pareto, the Strong Pareto, and the Full
Pareto, are in fact mutually equivalent. (C) 2001 Elsevier Science B.V. Al
l rights reserved. JEL classification: D63; D71.