content_image/298408.jpg content_image/298411.jpg
and C ( j ) s +1 are disjoint events, and the fact that D ( j ) 1 = C ( j ) 1 we obtain: 

<img src='content_image/298408.jpg'>

where the inequality in (F.20) follows from (F.19). 

Proof of item 2. Let p$_{1}$ be arbitrary fixed. Then, 

<img src='content_image/298411.jpg'>

