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** Commuting matrices, sets of matrices whose products do not depend on the order of multiplication
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** and Commuting
** and matrices
** for his fundamental and broad contributions to discrete optimization including his deep research on balanced and ideal matrices, perfect graphs and cutting planes for mixed-integer optimization.
** Frequency-customized quantization scaling matrices selected by the encoder for perceptual-based quantization optimization
** Michele Conforti and Gérard Cornuéjols and M. R. Rao for recognizing balanced 0-1 matrices in polynomial time.
** and sets
** Tarski's theorem: For every infinite set A, there is a bijective map between the sets A and A × A.
** Trichotomy: If two sets are given, then either they have the same cardinality, or one has a smaller cardinality than the other.
** 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.
** In particular, the cofinality of any nonzero finite ordinal, or indeed any finite directed set, is 1, since such sets have a greatest element.
** Fisher – Yates shuffle, also known as the Knuth Shuffle, an algorithm for randomly permuting sets
** In many languages ( e. g., Czech, English, French, Interlingua, and Russian ), the sets of relative and interrogative pronouns are nearly identical.
** Andy Green sets the first supersonic land speed record for the ThrustSSC team, led by Richard Noble of the UK.
** The first domestic radio sets come to stores in the United States ; a Westinghouse radio costs $ 10.
** The Human Be-In takes place in Golden Gate Park, San Francisco ; the event sets the stage for the Summer of Love.
** Vietnam War: In New York City, 22-year-old Catholic Worker Movement member Roger Allen LaPorte sets himself on fire in front of the United Nations building in protest of the war.
** Peter the Great sets out to travel in Europe officially incognito as " Artilleryman Pjotr Mikhailov ".
** Papillons ( Butterflies )— music by Robert Schumann ( arranged by Nicolai Tcherepnin ), choreography by Michel Fokine, sets by Mstislav Dobuzhinsky, and costumes by Leon Bakst.
** and whose
** Adeline in The Romance of the Forest-“ Her wicked Marquis, having secretly immured Number One ( his first wife ), has now a new and beautiful wife, whose character, alas!
** Anything further upstream ( but not an enhancer or other regulatory region whose influence is positional / orientation independent )
** Parity function, a Boolean function whose value is 1 if the input vector has an odd number of ones
** Farce – aims at entertaining the audience by means of unlikely, extravagant, and improbable situations, disguise and mistaken identity, verbal humour of varying degrees of sophistication, which may include word play, and a fast-paced plot whose speed usually increases, culminating in an ending which often involves an elaborate chase scene.
** A 3-front revolutionary invasion by air and sea takes place in the Dominican Republic, consisting of exiles aided by Fidel Castro and the Venezuelan government, whose objective is to overthrow dictator Rafael Leonidas Trujillo.
** Nadine Gordimer, whose work was once suppressed because of its scatching criticism of Apartheid in South Africa, is awarded the 1991 Nobel Prize in Literature.
** The Catholic Church calls for removal of the Carmelite convent located near the former Auschwitz concentration camp, whose presence had offended some Jewish leaders.
** Berenice II, queen of Egypt, daughter of Magas, King of Cyrenaica ( in modern Libya ), whose marriage to Ptolemy III Euergetes has reunited her country with Egypt ( b. c. 267 BC )
** Conon of Samos, Greek mathematician and astronomer whose work on conic sections ( curves of the intersections of a right circular cone with a plane ) serves as the basis for the fourth book of the Conics of Apollonius of Perga ( b. c. 280 BC )
** Ptolemy IV Philopator, Greek king of Egypt who has reigned from 221 BC and under whose weak and incompetent rule, heavily influenced by his favourites, much of Ptolemaic Syria has been lost and native uprisings have begun to disturb the internal stability of the country ( b. c. 238 BC )
** Fabius Maximus Cunctator, Roman general and statesman whose cautious delaying tactics ( which have led to his surname Cunctator, meaning " delayer ") during the early stages of the Second Punic War has given Rome time to recover its strength and take the offensive against the invading Carthaginian army of Hannibal ( b. c. 275 BC )
** Franchise tag, a designation of a player in the US National Football League whose contract is soon to expire that binds him to the team for one year at an enhanced salary
** pseudoterminal, for an axillary bud taking over the function of a terminal bud ( characteristic of species whose growth is sympodial: terminal bud dies and is replaced by the closer axillary bud, for examples beech, persimmon, Platanus have sympodial growth ).
** an adherent of Gaianism — an Earth-centered ( sometimes referred to as neo-Pagan ) spiritual inclination with diverse and evolving religious expression whose central reference is Gaia as personification of the Earth as Mother to all life upon the planet.
** Lucius Aemilius Paullus Macedonicus, Roman consul, politician and general whose victory over the Macedonians in the Battle of Pydna has ended the Third Macedonian War ( b. c. 229 BC )
** Artaxias I, king of Armenia who has ruled since 190 BC and the founder of the Artaxiad Dynasty, whose members would rule the Kingdom of Armenia for nearly two centuries
** Philip V, king of Macedonia from 221 BC, whose attempt to extend Macedonian influence throughout Greece has occurred at a time of growing Roman involvement in Greek affairs and resulted in his military defeat by Rome ( b. 238 BC )
** Titus Quinctius Flamininus, Roman general and statesman whose skillful diplomacy has enabled him to establish a Roman protectorate over Greece ( b. c. 227 BC ) ( approximate date )
** Titus Macchius Plautus, Roman comic dramatist, whose works, loosely adapted from Greek plays, established a truly Roman drama in the Latin language ( b. c. 254 BC )
** Since 1967, the term " occupied territories " has, in some contexts, come to refer specifically to the West Bank and Gaza Strip, whose status is hotly disputed.
** Pulsating variables, stars whose radius alternately expands and contracts as part of their natural evolutionary aging processes.
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