Pi-group
= Pi-group
{title2=$\pi\text{-group}$}
For a set $\pi$ of primes, a pi-group is a finite group whose order has no prime divisors outside $\pi$. The trivial group qualifies for every $\pi$.
= Pi-group
{title2=$\pi\text{-group}$}
For a set $\pi$ of primes, a pi-group is a finite group whose order has no prime divisors outside $\pi$. The trivial group qualifies for every $\pi$.