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Show that the following four conditions...

Show that the following four conditions are equivalent:(i)`Asub B` (ii) `A B =varphi` (iii) `A uuB = B` (iv) `A nnB = A`

Text Solution

Verified by Experts

1 and 2)
A-B`!= phi`
x`in`A,x`notin`B
not possible
A`subset`B
x`in`B
A-B=`phi`
1 and 3)
...
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