Trivial Pursuit each one having its own color to readily identify itself; in the classic version of "Trivial Pursuit", these are Geography (blue), Entertainment (pink), History (yellow), Arts & Literature (originally brown, later purple), Science & Nature (green), and Sports & Leisure (orange). The game includes a board, playing pieces, question cards, a box, small plastic wedges to fit into the playing pieces, and a die. Playing pieces used in "Trivial Pursuit" are round and divided into six sections, similar to a cheese triangle. A small plastic wedge, sometimes called cheese, can be placed into each of these sections to mark each
Category of small categories Category of small categories In mathematics, specifically in category theory, the category of small categories, denoted by Cat, is the category whose objects are all small categories and whose morphisms are functors between categories. Cat may actually be regarded as a 2-category with natural transformations serving as 2-morphisms. The initial object of Cat is the "empty category" 0, which is the category of no objects and no morphisms. The terminal object is the "terminal category" or "trivial category" 1 with a single object and morphism. The category Cat is itself a large category, and therefore not an object of itself.