Non-Member Relation
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A Non-Member Relation is a Binary Relation between a Thing an a set.
- AKA: Non-Member, ∉, NotIn,
\notin. - Context:
- It can be read as “x is not a member of set X”.
- It can be written as “[math]\displaystyle{ x \notin X }[/math].”
- Example(s):
- A Snake is a Non-Member of the Mammal set.
- Non-Member(Snake,Mammal) ⇒ True.
- See: Member Relation, Subset Relation.