Question
Let $R$ be the relation $\{(a, b) | a \text { divides } b\}$ on the set of integers. What is the symmetric closure of $R ?$
Step 1
The symmetric closure of a relation R on a set A is the smallest symmetric relation on A that contains R. In other words, it is the relation obtained by adding to R all pairs (b, a) such that (a, b) is in R. Show more…
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