Remarks on the Classical Probability of Bifuzzy Events

The present paper discusses the conception of the cardinality of a bifuzzy set in two versions - as a real number and as a bifuzzy set. The notions introduced here serve one to calculate the probability of a bifuzzy event defined in a finite space of elementary events and are a generalization of Laplace's approach in the Kolmogorov probability calculus. The paper refers to works of Gerstenkorn and Manko (1998) and Mańko (1998) and Mańko (1992) and is illustrated by an example.