** Spherical aberration, which occurs when light rays strike a lens or mirror near its edge

** The Post Global Financial Crisis, 2008-2011, soaring food prices, especially for grains, led to calls for the government to provide more immediate assistance to the population of more than 40 % in the " poverty tunnel " and to strike a " new deal " on agriculture policy and reform.

** īcō, īcere, īcī, īctus ( to strike, to smite )

** Chicken Scheme has a < strike > OpenGL egg </ strike > gl-suite project

** Games scheduled by UEFA, the European governing body of soccer, that were scheduled for September 12 and 13 were postponed ( games had been played on the 11th as the first plane strike took place at 2: 46 PM CET ).

** Four of 5 railroad operating unions strike against the Illinois Central Railroad without warning, bringing to a head a 5-year dispute over railroad work rules.

** 20, 000 London policemen strike for increased pay and union recognition.

** Dock workers strike in the UK.

** Martial law is declared in Britain because of the general strike.

** UK General Strike 1926: In the United Kingdom, a general strike by trade unions ends ( the strike began on May 3 ).

** Cordobazo: A general strike and civil unrest break out in Córdoba, Argentina.

** An anti-fascist strike begins in northern Italy.

** WWII: After flying from Britain, 160 American bombers strike a hydro-electric power facility and heavy water factory in German-controlled Vemork, Norway.

** New York City's Transport Works Union Local 100 goes on strike, which continues for 11 days.

** A lightning strike causes the crashing of Pan Am Flight 214 near Elkton, Maryland, killing 81 people.

** A general strike takes place in the People's Republic of Congo.

** The general strike in France is ended by the Matignon Agreements.

** A seamen's strike is called in Britain.

** A sailors ' strike, organised by the National Union of Seamen, ends in the United Kingdom.

** In South Vietnam, Thich Tri Quang ends a 100-day hunger strike.

** Severe earthquakes strike the Azores and the village of São Miguel sinks.

** WWII: The Royal Navy launches the first aircraft carrier strike in history, on the Italian battleship fleet anchored at Taranto naval base.

** Under the pressure of a general strike, the Belgian Federal Parliament accepts a proposal to accept general multiple suffrage.

** Eunectes murinus, the green anaconda, the largest species, is found east of the Andes in Colombia, Venezuela, the Guianas, Ecuador, Peru, Bolivia, Brazil and on the island of Trinidad.

** Eunectes notaeus, the yellow anaconda, a smaller species, is found in eastern Bolivia, southern Brazil, Paraguay and northeastern Argentina.

** Eunectes deschauenseei, the dark-spotted anaconda, is a rare species found in northeastern Brazil and coastal French Guiana.

** Eunectes beniensis, the Bolivian anaconda, the most recently defined species, is found in the Departments of Beni and Pando in Bolivia.

** Tarski's theorem: For every infinite set A, there is a bijective map between the sets A and A × A.

** The Cartesian product of any family of nonempty sets is nonempty.

** König's theorem: Colloquially, the sum of a sequence of cardinals is strictly less than the product of a sequence of larger cardinals.

** Hausdorff maximal principle: In any partially ordered set, every totally ordered subset is contained in a maximal totally ordered subset.

** For every non-empty set S there is a binary operation defined on S that makes it a group.

** Tychonoff's theorem stating that every product of compact topological spaces is compact.

** In the product topology, the closure of a product of subsets is equal to the product of the closures.

** If S is a set of sentences of first-order logic and B is a consistent subset of S, then B is included in a set that is maximal among consistent subsets of S. The special case where S is the set of all first-order sentences in a given signature is weaker, equivalent to the Boolean prime ideal theorem ; see the section " Weaker forms " below.

** Any union of countably many countable sets is itself countable.

** If the set A is infinite, then there exists an injection from the natural numbers N to A ( see Dedekind infinite ).

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

** The Vitali theorem on the existence of non-measurable sets which states that there is a subset of the real numbers that is not Lebesgue measurable.

** The Lebesgue measure of a countable disjoint union of measurable sets is equal to the sum of the measures of the individual sets.

** The Nielsen – Schreier theorem, that every subgroup of a free group is free.