Transitive Closures

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Let the relation $R = \{(0, 0); (0, 3); (1, 0); (1, 2); (2, 0); (3, 2)\}$ Find the Transitive closure of the relation.

So far this is what I'm coming up with: $\{(0, 0); (0, 3); (1, 0); (1, 2); (2, 0); (3, 2); (0, 2); (1, 3); (3, 0); (2, 3); (3, 3); (2, 2)\}$

I think this is correct so far but I'm not positive that I understand the idea of the what the transitive closure entails.

Can anyone help with this or tell me what I'm missing?

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Your intuition is correct.

The relation can be drawn like this, where $n \rightarrow m$ means $(n,m) \in R$:

enter image description here

Now, the transitive closure is the smallest relation $R'$ s.t $R \subseteq R'$ and $R'$ is transitive.

Okay, so why is our relation not transitive now? If you can, using two arrows, go from $n$ to $m$ and from $m$ to $k$, then there must be a direct arrow from $n$ to $k$:

enter image description here

You should convince yourself that this new relation is not transitive either.

So you simply iterate until you end up with a transitive relation.