Exactly (I’m assuming by subset you mean non-strict subset). Crucially, a non-standard model may not have all the bijections you’d expect it to, which is where EY comes at it from.
I’m assuming by subset you mean non-strict subset
I was, but that’s not necessary—a countably infinite set can be bijectively mapped onto {2, 3, 4, …} which is a proper subset of N after all! ;-)
Oh yeah—brain fail ;)
Exactly (I’m assuming by subset you mean non-strict subset). Crucially, a non-standard model may not have all the bijections you’d expect it to, which is where EY comes at it from.
I was, but that’s not necessary—a countably infinite set can be bijectively mapped onto {2, 3, 4, …} which is a proper subset of N after all! ;-)
Oh yeah—brain fail ;)