Dummit and Foote Section 1.2 Dihedral Groups Exercise 15 reads as follows:

Find a set of generators and relations for /n

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If you particularize the problem to say /4 then 1 + 4 is a generator and so is 3 + .

But relations??? Are there any?

I guess then 1 + n is a generator for /n . Is that correct? Other generators? Relations???

Can someone please clarify and help?

Peter