I have a question about what I would call a relation inside a relation. Like:(adsbygoogle = window.adsbygoogle || []).push({});

A={1,2,3) and B={a,b,c}

R1={(a,1) ,(a,3), (b,2), (c,1,), (c,3) }

R2={(a,a), (b,a), (b,c), (c,a) }

R3=R1R2

Like this. I have 2 regular relations. Then I form another relation using these 2. How do I do that? Like if you want to map it or show their common sets.

I would say there's none.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Relations (Relation inside a Relation)

**Physics Forums | Science Articles, Homework Help, Discussion**