Two useful representations of a vector are simply a linear combination of basis vectors, and column matrices.

Two quarks can have their spins aligned, in which case the two spin vectors add to make a vector of length S = 1 and three spin projections ( S < sub > z </ sub > = + 1, S < sub > z </ sub > = 0, and S < sub > z </ sub > = − 1 ), called the spin-1 triplet.

Two random variables that are normally distributed may fail to be jointly normally distributed, i. e., the vector whose components they are may fail to have a multivariate normal distribution.

Two different magnetometers were mounted: a vector helium magnetometer and a fluxgate magnetometer.

Two representations of G on vector spaces V, W are equivalent if they have the

Two vector spaces over the same field with the same dimensionality are always isomorphic ; but not necessarily in a natural or canonical way.

Two similar notations are used for the Euclidean norm of a vector x:

Two common examples are extracting a substring from a string of characters ( e. g. " ell " from " hello "), and extracting a row ( or a column ) of a rectangular matrix to be used as a vector.

Two long-lived ( narrow in the jargon of particle spectroscopy ) states: the scalar ( 0 < sup >++</ sup >) state ( 2317 ) and the vector ( 1 < sup >+</ sup >) meson ( 2460 ), observed at CLEO and BaBar, have also been tentatively identified as tetraquark states.

Two movement systems are available: the default " cinematic " system, in which ships move and turn in the style of wet navy vessels as seen in space opera film and television, and the " vector " system which is a rather more realistic representation of movement in space but is somewhat more complex.

Two subspaces U < sub > 1 </ sub > and U < sub > 2 </ sub > are connected if one of them is a subset of the other.

Bill Haley's compositions included " Four Leaf Clover Blues ", " Crazy Man, Crazy ", " What ' Cha Gonna Do ", " Fractured ", " Live It Up ", " Farewell, So Long, Goodbye ", " Real Rock Drive ", " Rocking Chair on the Moon ", " Sundown Boogie ", " Birth Of The Boogie ", " Two Hound Dogs ", " Rock-A-Beatin ' Boogie ", " Hot Dog Buddy Buddy ", " R-O-C-K ", " Rudy's Rock ", " Calling All Comets ", " Tonight's the Night ", " Hook, Line and Sinker ", " Sway with Me ", " Paper Boy ( On Main Street U. S. A .)", " Skinny Minnie ", " B. B.

Two Bacillus species are considered medically significant: B. anthracis, which causes anthrax, and B. cereus, which causes a foodborne illness similar to that of Staphylococcus.

Two sets A and B are defined to be equal when they have precisely the same elements, that is, if every element of A is an element of B and every element of B is an element of A.

Two schools are named after him, Cecil B. DeMille Middle school, in Long Beach, California, and Cecil B. DeMille elementary school in Midway City, California.

Two ideals A and B in the commutative ring R are called coprime ( or comaximal ) if A + B = R. This generalizes Bézout's identity: with this definition, two principal ideals ( a ) and ( b ) in the ring of integers Z are coprime if and only if a and b are coprime.

Transport of material in stagnant fluid or across streamlines of a fluid in a laminar flow occurs by molecular diffusion. Two adjacent compartments, separated by partition containing pure gases A or B may be envisaged.

Moon was credited as composer of " I Need You ", which he also sang, and the instrumental " Cobwebs and Strange " ( from the album A Quick One, 1966 ), the single B-sides " In The City " ( co-written by Moon and Entwistle ), " Dogs Part Two " ( 1969 ) ( sharing credits with Townshend's and Entwistle's dogs, Towser and Jason ), " Tommy's Holiday Camp " ( 1969 ), " Waspman " ( 1972 ), and " Girl's Eyes " ( from The Who Sell Out sessions ; featured on Thirty Years of Maximum R & B and a 1995 re-release of The Who Sell Out ).

* Walden Two ( 1948 ) by B. F. Skinner

Two physical phenomena which are described by classical fields are Newtonian gravitation, described by Newtonian gravitational field g ( x, t ), and classical electromagnetism, described by the electric and magnetic fields E ( x, t ) and B ( x, t ).

Two Elvis Presley records made the R & B top five in 1957: " Jailhouse Rock "/" Treat Me Nice " at # 1, and " All Shook Up " at # 5, an unprecedented acceptance of a non-African American artist into a music category known for being created by blacks.

: Two events A and B are independent if and only if

* Walden Two ( 1948 ) by B. F. Skinner, a community in which every aspect of living is put to rigorous scientific testing.

Two former Presidents ( Truman, Eisenhower ) and one future one ( Lyndon B. Johnson ) join President Kennedy in paying their respects.

* Cole, Donald B. Vindicating Andrew Jackson: The 1828 Election and the Rise of the Two Party System ( 2009 ) excerpt and text search

Two types of polarential systems, known as types A and B, are in use.

Some of the better known modern experiments include the Findhorn Foundation in Scotland, Dancing Rabbit Ecovillage, Twin Oaks and Los Horcones ( inspired by B. F. Skinner's Walden Two ) and The Farm in the US, ZEGG in Germany, Camphill Communities ( all over, but originating in Europe ), and Auroville in India.

* B. Colgrave ( еd ), Two Lives of St. Cuthbert ( Cambridge, 1940 ).

Two more partition plans were also considered: Plan B ( map ) and Plan C ( map ).

Two disjoint closed subsets A and B of a topological space X are said to be separated by neighbourhoods if there are neighbourhoods U of A and V of B that are also disjoint.

Two further water bodies – the Grand Canal on the southside and the Royal Canal on the northside – ring the inner city on their way to the west and the River Shannon.

Two additional trenches, about 50 metres wide, have been built to keep the inner city free of water from the Elbe, by dissipating the water downstream through the inner city's gorge portion.

Two roundabouts in the Melbourne metropolitan area, Highett, Victoria and Brighton, have heavy rail crossing the roundabout and through the inner circle.

* Two vectors, x and y, in an inner product space, V, are orthogonal if their inner product is zero.

Two groups, however, instead occupied the Hospitaller land, and became known as the " inner inn " ( occupying the consecrated buildings near the centre of the temple ) and the " middle inn " ( occupying the unconsecrated buildings between the " inner inn " and the Outer Temple ).

Two canaliculi of tiny diameter are present in the inner corner of the eyelid, also called the lacrimal ducts ; their openings can be seen with the naked eye within the lacrymal sacs when the eyelids are everted.

Two inner quadrangles were divided by a cloister which was later restyled and dedicated to the hospital's members who fell in World War I.

Two vinyl records with inner and outer album sleeves

Two seeds are also placed in each of the four rightmost inner pits for each player.

Two columns helped divide the main stage into forestage, middle stage, and inner stage areas.

Two further carved stones, of uncertain ( though probably early ) character, were discovered re-used as building rubble in the inner east gable and outer south wall during the chapel's restoration.

Two inner city stations, North Melbourne and Richmond, have several platforms.

** Kuichigai-bi: Two thin grooves that run the top half of the blade ; the bottom half is denoted by the outer groove stopping halfway while the inner one expands to fill the width.

Two more small inner moons, Cupid and Mab, were discovered using the Hubble Space Telescope in 2003.

Two sculptures of Uttama Chola ( Madhuranthaka Devar ) and his mother can be found in the Southern wall of the inner Prakara of the Konnerirajapuram ( aka Thirunallam ) temple near Kumbakonam.

Two dimensional inner Solar System planetary orbits overlaid with estimated minimum ( dark green ) and maximum ( light green ) extent of the Solar System's predicted habitable zone.

Two main zones are distinguished in the upper mantle: the inner asthenosphere composed of plastic flowing rock about 200 km thick, and the lowermost part of the lithosphere composed of rigid rock about 50 to 120 km thick.

Two involutions and are considered equivalent if they differ only by an inner automorphism.

Two patios ( roofless inner courtyard ) ensure that enough light and air enter the prayer hall of Baitul Mukarram Mosque.

Two decades after CATS, for example, the London study followed essentially the same procedure, but in this case, researchers first divided trips into those made in the inner part of the city and those in the outer part.

Two windows shed light on the interior, a circular, undivided room covered by a low dome ( i. e. the original inner shell ).