Prove that there exists a group isomorphism between ((adsbygoogle = window.adsbygoogle || []).push({}); Q&,*) and (Z[X],+) whereQ&is the set of strictly positive rational numbers.

I was thinking of mapping a p_n, being the nth prime inQ&to x^(n-1). Would this work for this case?

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

Dismiss Notice

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!

# Homework Help: Group Isomorphism

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