Category:Examples of Suprema

This category contains examples of Supremum of Set.

Let $\struct {S, \preccurlyeq}$ be an ordered set.

Let $T \subseteq S$.

An element $c \in S$ is the supremum of $T$ in $S$ if and only if:

$(1): \quad c$ is an upper bound of $T$ in $S$

$(2): \quad c \preccurlyeq d$ for all upper bounds $d$ of $T$ in $S$.