New answers tagged

5 votes

Subgroup of p-adic units

More is true: the generating set $\{f_p:\text{$p$ is a prime}\}$ is dense in $\smash{\widehat{\mathbb Z}}^\times$. To see this, it suffices to show that, for any finite set of primes $S$, the ...
GH from MO's user avatar
  • 99.1k

Top 50 recent answers are included