Union
$$A \cup B =$$
{ application, aristocracy, audio, democracy, example, font, image, message, model, multipart, oligarchy, text, timocracy, tyranny, video }
Symmetric Difference
$$A \ominus B =$$
{ application, aristocracy, audio, democracy, example, font, image, message, model, multipart, oligarchy, text, timocracy, tyranny, video }
Cartesian Product
$$A \times B =$$
{ (aristocracy, application),
(aristocracy, audio),
(aristocracy, example),
(aristocracy, font),
(aristocracy, image),
(aristocracy, message),
(aristocracy, model),
(aristocracy, multipart),
(aristocracy, text),
(aristocracy, video),
(democracy, application),
(democracy, audio),
(democracy, example),
(democracy, font),
(democracy, image),
(democracy, message),
(democracy, model),
(democracy, multipart),
(democracy, text),
(democracy, video),
(oligarchy, application),
(oligarchy, audio),
(oligarchy, example),
(oligarchy, font),
(oligarchy, image),
(oligarchy, message),
(oligarchy, model),
(oligarchy, multipart),
(oligarchy, text),
(oligarchy, video),
(timocracy, application),
(timocracy, audio),
(timocracy, example),
(timocracy, font),
(timocracy, image),
(timocracy, message),
(timocracy, model),
(timocracy, multipart),
(timocracy, text),
(timocracy, video),
(tyranny, application),
(tyranny, audio),
(tyranny, example),
(tyranny, font),
(tyranny, image),
(tyranny, message),
(tyranny, model),
(tyranny, multipart),
(tyranny, text),
(tyranny, video) }
Media type