{} or ∅ - Empty set, ∈ - "is an element of", ∉ - "is not an element of", ⊂ - Subset, ∪ - Union - elements in both sets, ∩ - Intersection - elements common to both, A' or Ac - Complement - elements not in the set, A = {1, 2, 3} - A set, # - Cardinal Number - Number of elements in a set, ⊄ - Not a subset,

Leaderboard

Visual style

Options

Switch template

Continue editing: ?