Bradley, Richard C. - In: Journal of Multivariate Analysis 13 (1983) 1, pp. 167-176
The maximal correlation between a pair of [sigma]-fields and becomes arbitrarily small as sup{P(A [pitchfork] B) - P(A) P(B)/[P(A) P(B)]1/2, A [set membership, variant] , B [set membership, variant] , P(A) > 0, P(B) > 0} becomes sufficiently small.