阿摩線上測驗
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阿摩線上測驗
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7. For n≥ 1, let 
= {1, 2,3, ..,n}. 
denotes the power set of 
(a)Let e, be the number of edges in the Hasse diagram for the partial order
. Please find a recurrence relation for 
and then solve the recurrence relation to get 