Hi folks, I just wanted to "check my answers" -
here is a poset ({2,4,6,9,12,18,27,36,48,60,72},|)
that's "|" is divide (divisibility)
What's the answer for
1) upper bound of {2,9}
my answer) 18,36,72
2)least upper bound of {2,9}
my answer) 18
3)lower bounds of {60,72}
my answer) 6,2
4)greatest lower bound of {60,72}
my answer) 6
I wish Soroban knew some discrete math. He seems to be a nice guy!