
#1
Feb1004, 08:18 PM

P: 125

How do you show that if B is included in C, then the power set of B is included in the power set of C?




#2
Feb1004, 10:44 PM

Emeritus
Sci Advisor
PF Gold
P: 16,101

What have you tried already? I'd imagine just starting with the definitions would give a strong clue.




#3
Apr604, 04:17 PM

P: 23

Power set of C includes all subsets of C, which means that it also includes all subsets of a subset (B). Thus it includes the power set of B.
Is this formal enough? 


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