Math Help - lattice partial order

HI there,

If we have a poset ({1,2,4,8,16}, |), which is a lattice then

is lower bound of {4,8} = 2,1
greatest lower bound of {4,8} = 2
upper bound of {4,8} = 8, 16
least upper bound of {4,8} = 8

Is the above given paragraph correct?

[QUOTE=robocop_911;158171]HI there,

If we have a poset ({1,2,4,8,16}, |), which is a lattice then

is lower bound of {4,8} = 2,1,& 4
greatest lower bound of {4,8} = 2 No. It is 4
upper bound of {4,8} = 8, 16
least upper bound of {4,8} = 8/QUOTE]