** Every vector space has a basis.

** The closed unit ball of the dual of a normed vector space over the reals has an extreme point.

** Every infinite game in which is a Borel subset of Baire space is determined.

** The theorem that every Hilbert space has an orthonormal basis.

** On every infinite-dimensional topological vector space there is a discontinuous linear map.

** A uniform space is compact if and only if it is complete and totally bounded.

** Every Tychonoff space has a Stone – Čech compactification.

** In topology, morphisms between topological spaces are called continuous maps, and an automorphism of a topological space is a homeomorphism of the space to itself, or self-homeomorphism ( see homeomorphism group ).

** 8-bit CPU, 16-bit address space

** Ariane ( rocket family ), a series of space vehicles

** Many embedded applications have a limited amount of physical space for circuitry ; keeping peripherals on-chip will reduce the space required for the circuit board.

** Social Security number with no dashes or spaces followed immediately by " USN ", space, blood group

** Stave-core-Consists of wooden slats stacked upon one another in a manner similar to a plank & batten door ( though the slats are usually thinner ) or the wooden-block hollow-core ( except that the space is entirely filled ).

** Solid-core-Can consist of low-density particle board or foam used to completely fill the space within the door.

** Stave-core-Consists of wooden slats stacked upon one another in a manner similar to a plank & batten door ( though the slats are usually thinner ) or the wooden-block hollow-core ( except that the space is entirely filled ).

** Solid-core-Can consist of low-density particle board or foam used to completely fill the space within the door.

** In statistics, it is used as the symbol for the sample space, or total set of possible outcomes.

** Origin ( mathematics ), a fixed point of reference for the geometry of the surrounding space

** Garden square, an open space with buildings surrounding a garden

** Address space

** Virtual address space

A space X can be embedded into the double dual X ** by

** Direct action

** " Rule 5: All scenes should begin and end with continuing action.

** List of female action heroes

** Utilitarianism, which holds that an action is right if it leads to the most happiness for the greatest number of people.

** State consequentialism or Mohist consequentialism, which holds that an action is right if it leads to state welfare, through order, material wealth, and population growth

** Egoism, the belief that the moral person is the self-interested person, holds that an action is right if it maximizes good for the self.

** Situation Ethics, which holds that the correct action is the one that creates the most loving result, and that love should always be our goal.

** Intellectualism, which dictates that the best action is the one that best fosters and promotes knowledge.

** Welfarism, which argues that the best action is the one that most increases economic well-being or welfare.

** Preference utilitarianism, which holds that the best action is the one that leads to the most overall preference satisfaction.

** Comedy of errors – a work that is light and often humorous or satirical in tone, in which the action usually features a series of comic instances of mistaken identity, and which typically culminates in a happy resolution of the thematic conflict.

** WWI: Action of 17 November 1917: United States Navy destroyers USS Fanning and USS Nicholson capture Imperial German Navy U-boat SM U-58 off the south-west coast of Ireland, the first combat action in which U. S. ships take a submarine ( which is then scuttled ).

** Hedd Wyn, Welsh poet ( killed in action ) ( b. 1887 )

** Neil James Archibald Primrose, MP ( killed in action ) ( b. 1882 )

** WWII – Sonderaktion Krakau: Germans take action against scientists from the University of Kraków and other Kraków universities at the beginning of WWII.

** The Wilhelm Gustloff, with over 10, 000 mainly civilian Germans from Gotenhafen ( Gdynia ) in the Gdansk Bay, is sunk by three torpedoes from the Soviet submarine S-13 in the Baltic Sea ; up to 9, 400 are thought to have died – the greatest loss of life in a single ship sinking in war action in history.

** The first official large unit action of the Vietnam War took place when two companies of the ARVN 23d Division were ambushed by a well-organized Vietcong force of several hundred identified as the " 2d Liberation Battalion ".

** Frederick Fisher, Canadian VC recipient ( killed in action ) ( b. 1894 )

** Charles Sorley, British poet ( killed in action ) ( b. 1895 )

** Franz Josef Strauß, the West German defense minister, is relieved of his duties over the Spiegel scandal, due to his alleged involvement in police action against the magazine.

** Battle of Mañeru-Third Carlist War-In continued campaigning in Navarre, Spanish Republican General Domingo Moriones meets a Carlist force under Nicolás Ollo at Mañeru, near Puente de la Reina, in a hard-fought but indecisive action.

** Marcus Aurelius, a Spaniard like Trajan and Hadrian, is a stoical, disciple of Epictetus, and an energetic man of action.

** Switching action of electrical circuitry, including inductive loads such as relays, solenoids, or electric motors.

** Military operation, a military action ( usually in a military campaign ) using deployed forces