{ Christopher Alexander and J., interpret, love, organize, select }
Symmetric Difference
$$A \ominus B =$$
{ Christopher Alexander and J., interpret, love, organize, select }
Difference
$$A - B =$$
{ Christopher Alexander and J., love }
Difference
$$B - A =$$
{ interpret, organize, select }
Cartesian Product
$$A \times B =$$
{ (Christopher Alexander and J., interpret), (Christopher Alexander and J., organize), (Christopher Alexander and J., select), (love, interpret), (love, organize), (love, select) }