SETS

• This is an unordered collection of objects, which can be finite or infitie.

  Sets
• These are the members of the set.

  Elements
• What does the following mean: ∅ or { }

  Empty Set
• It is a set with exactly one element.

  Singleton Set
• What way of specifying set is the following:

  • V = set of all vowels in the English alphabet
  • A = set of all perfect squares less than 10

  Descriptive Method
• What way of specifying set is the following:

  • V = { a , e , i , o , u }
  • A = { 0 , 1 , 4 , 9 }

  Roster / Enumeration Method
• TRUE OR FALSE. Repeated elements are to be written only once.

  True
• What way of specifying set is the following:

  • A = { x | x is a perfect square less than 10 }

  Rule Method
• x | in verbal means:

  x such that
• ∈ indicates _____ and means “is an element of”

  set membership
• This refers to the size or the number of elements within a set.

  Cardinality