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71Category of metric spaces — The category Met, first considered by Isbell (1964), has metric spaces as objects and metric maps or short maps as morphisms. This is a category because the composition of two metric maps is again metric.The monomorphisms in Met are the injective …
72Trivial group — In mathematics, a trivial group is a group consisting of a single element. All such groups are isomorphic so one often speaks of the trivial group. The single element of the trivial group, variously labeled e , 1, or 0, is the identity element.… …
73Category of preordered sets — The category Ord has preordered sets as objects and monotonic functions as morphisms. This is a category because the composition of two monotonic functions is monotone.The monomorphisms in Ord are the injective monotonic functions.The empty set… …
74Unit type — A unit type is a mathematical type that allows only one value (and thus can hold no information).The carrier (underlying set) associated with a unit type can be any singleton set. There is an isomorphism between any two such sets, so it is… …
75Partially ordered set — The Hasse diagram of the set of all subsets of a three element set {x, y, z}, ordered by inclusion. In mathematics, especially order theory, a partially ordered set (or poset) formalizes and generalizes the intuitive concept of an ordering,… …
76Closure (topology) — For other uses, see Closure (disambiguation). In mathematics, the closure of a subset S in a topological space consists of all points in S plus the limit points of S. Intuitively, these are all the points that are near S. A point which is in the… …
77Don Bennett — For other people named Don Bennett, see Don Bennett (disambiguation). Donald Clifford Tyndall Bennett Bennett as an air officer Birth name …
78The Hermit — (IX) is the ninth trump or Major Arcana card in most traditional Tarot decks. It is used in game playing as well as in divination. Description A. E. Waite was a key figure in the development of modern Tarot interpretations. However, not all… …
79Stealing Beauty — Infobox Film name = Stealing Beauty caption = Movie poster for Stealing Beauty director = Bernardo Bertolucci writer = Bernardo Bertolucci (story) Susan Minot starring = Joseph Fiennes Jeremy Irons Liv Tyler producer = Jeremy Thomas music =… …
80MPEG-4 Part 14 — MP4 redirects here. For other uses, see MP4 (disambiguation). MPEG 4 Part 14 (MP4) MPEG 4 Part 14 extends over ISO Base Media File Format (MPEG 4 Part 12).[1] …
