Union
$$A \cup B =$$
{ application, audio, example, font, grammar, image, logic, message, model, multipart, rhetoric, text, video }
Symmetric Difference
$$A \ominus B =$$
{ application, audio, example, font, grammar, image, logic, message, model, multipart, rhetoric, text, video }
Difference
$$B - A =$$
{ application, audio, example, font, image, message, model, multipart, text, video }
Cartesian Product
$$A \times B =$$
{ (grammar, application),
(grammar, audio),
(grammar, example),
(grammar, font),
(grammar, image),
(grammar, message),
(grammar, model),
(grammar, multipart),
(grammar, text),
(grammar, video),
(logic, application),
(logic, audio),
(logic, example),
(logic, font),
(logic, image),
(logic, message),
(logic, model),
(logic, multipart),
(logic, text),
(logic, video),
(rhetoric, application),
(rhetoric, audio),
(rhetoric, example),
(rhetoric, font),
(rhetoric, image),
(rhetoric, message),
(rhetoric, model),
(rhetoric, multipart),
(rhetoric, text),
(rhetoric, video) }
Media type