In 2001 Carlsson and Full´er [1] introduced the possibilistic mean value,
variance and covariance of fuzzy numbers. In 2003 Full´er and Majlender
[4] introduced the notations of crisp weighted possibilistic mean value,
variance and covariance of fuzzy numbers, which are consistent with the
extension principle. In 2003 Carlsson, Full´er and Majlender [2] proved the
possibilisticCauc hy-Schwartz inequality. Drawing heavily on [1, 2, 3, 4, 5]
we will summarize some normative properties of possibility distributions
