Definition:Meet Semilattice

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Definition

Let $\left({S, \preceq}\right)$ be an ordered set.

Suppose that for all $a, b \in S$:

$a \wedge b \in S$,

where $a \wedge b$ is the meet of $a$ and $b$.


Then the ordered structure $\left({S, \wedge, \preceq}\right)$ is called a meet semilattice.


That it is indeed an ordered structure is proved on Meet Semilattice is Ordered Structure.

That a meet semilattice is a semilattice is proved on Meet Semilattice is Semilattice.


Also see