scholarly journals A mean central limit theorem for weakly multiplicative systems and its application to lacunary trigonometric series

1991 ◽  
Vol 89 (2) ◽  
pp. 159-179
Author(s):  
Katusi Fukuyama
1982 ◽  
Vol 87 ◽  
pp. 79-94 ◽  
Author(s):  
Takafumi Murai

We denote by Z+ the semi-group of positive integers. For a subset E of Z+, we denote by |E| (≦ + ∞) its cardinal number and by E(n) the intersection of E and an interval [1, n) (n ≧ 1). We shall identify a subset E of Z+ with a sequence, arranging elements of E according to their order.


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