Definition: A set is a collection of distinct objects, called elements, considered as a single thing
An example of a set would be all the weapons.
Definiton:An object that belongs to a set
An example of this would be the weapons in the game
Definition: A subset is a smaller set made by choosing some (or all) elements from a bigger set.
An example of this is:
M represents Melee, which is a subset of W which is Weapons. I listed out the melee weapons in the subset.
Definition: The empty set is a set that contains no elements. It is written as { }.
An Example of an Empty set would be All the waterguns in Doom. There aren't any Waterguns in Doom so the set would be empty.
Definition: Cardinality means the number of elements in a set.
An example of this would be the number of weapons in Doom.
