2 (number)

natural number

Deux-Sèvres (, Poitevin-Saintongese: Deùs Saevres) is a French department. Deux-Sèvres literally means "two Sèvres": the Sèvre Nantaise and the Sèvre Niortaise are two rivers which have their sources in the department. It had a population of 375,229 in 2023.

flat, infinite two-dimensional surface

geometric model of the planar projection of the physical universe

search algorithm in sorted lists that operates by decreasing the search space by half each pass

electrical data cable consisting of several twisted pairs

Roman political alliance (43–32 BC)

thumb|upright=1.2|An ostrich, the co-fastest extant biped at

grammatical number indicating two items

proposed diplomatic solution for the Israeli–Palestinian conflict involving the establishment of a Palestinian state in addition to the Jewish state of Israel

symbol in heraldry and vexillology

In geometry, a bigon, digon, or a '''2-gon''', is a polygon with two sides (edges) and two vertices. Its construction is degenerate in a Euclidean plane because either the two sides would coincide or one or both would have to be curved; however, it can be easily visualised in elliptic space. It may also be viewed as a representation of a graph with two vertices, see "Generalized polygon".

In poetry, a couplet ( ) or distich ( ) is a pair of successive lines that rhyme and have the same metre. A couplet may be formal (closed) or run-on (open). In a formal (closed) couplet, each of the two lines is end-stopped, implying that there is a grammatical pause at the end of a line of verse. In a run-on (open) couplet, the meaning of the first line continues to the second.

information represented using the binary number system

two raised to an integer power

financial exotic option with an all-or-nothing payoff

wording that is devised to be understood in two ways

image that consists of only two colors

musical form in two related sections, both of which are usually repeated (AA′BB′)

mathematical operation

classical logic of two values, either true and false

unit of information

discipline of figure skating

Pair or PAIR or Pairing may refer to:

chemical weapons or munitions

In mathematics, negative two or minus two is an integer two units from the origin, denoted as −2 or −2. It is the additive inverse of 2, following −3 and preceding −1, and is the largest negative even integer. Except in rare cases exploring integral ring prime elements, negative two is generally not considered a prime number.

type of lens made up of two simple lenses paired together

condition of suffering from a mental illness and a comorbid substance abuse problem

thumb|upright=1.4|A graph of the potential energy of a bistable system; it has two local minima x_1 and x_2. A surface shaped like this with two "low points" can act as a bistable system; a ball resting on the surface can only be stable at those two positions, such as balls marked "1" and "2". Between the two is a local maximum x_3. A ball located at this point, ball 3, is in equilibrium but unstable; the slightest disturbance will cause it to move to one of the stable points. thumb|upright=0.8|Light switch, a bistable mechanism

a problem arising when multiple people claim the title of emperor

function that takes two inputs

(also denoted \mathbb F_2, or \mathbb Z/2\mathbb Z) is the finite field with two elements.

Concept in statistical analysis