Module $M_{ 22 }$

$\mathbb Q/\mathbb Z$ over $\mathbb Z$: the ring of integers

Description:

The quotient group $\mathbb Q/\mathbb Z$. Also isomorphic to the sum of the Prüfer $p$ groups $\oplus_p Z(p^\infty)$ as $p$ ranges over all primes in $\mathbb N$

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