Set
A set is a an arbitrary collection of objects. We call the objects of a set elements. If is a set, and is a element of , then we write .
We remark that that the terms object and collection are to be taken without definition.
A set is a an arbitrary collection of objects. We call the objects of a set elements. If is a set, and is a element of , then we write .
We remark that that the terms object and collection are to be taken without definition.