Mathematics, 30.07.2019 18:20 cielo2761
Given nonempty sets a and b, prove that every set in p(b − a) ⊆ p(b) − p(a).
Answers: 2
. As we chose 
in 
we know that 
. Since 
by transitivity we get:
. 
is the empty set, we already have that 
. But if 
, because 
is already subset of 
, and those sets do not share any element. In other words:
. 
, where we conclude that 
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Given nonempty sets a and b, prove that every set in p(b − a) ⊆ p(b) − p(a)....
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