Let $P$ be the proposition that there exists a non-zero number that is divisible by every standard natural number.
Let $N$ be a non-standard model of PA.
Must $P$ be true in $N$?
Let $P$ be the proposition that there exists a non-zero number that is divisible by every standard natural number.
Let $N$ be a non-standard model of PA.
Must $P$ be true in $N$?
If $N$ has an infinite number $h$, then the factorial $h !$ is divisible by every standard integer.