関連ワード:  what is cross product of sets    what is cartesian product of sets    what is cross product of two sets    what is cartesian product of two sets    what is cartesian product of two sets a and b    what is the cartesian product of sets a and b    what is the cartesian product of the sets a b and 1 2    what is the cartesian product of 3 sets    what does the cartesian product of sets a and b represent    when to use cross product