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Unordered pair, or pair set, in mathematics and set theory; Ordered pair, or 2-tuple, in mathematics and set theory; Pairing, in mathematics, an R-bilinear map of modules, where R is the underlying ring; Pair type, in programming languages and type theory, a product type with two component types; Topological pair, an inclusion of topological spaces
Pair programming is a software development technique in which two programmers work together at one workstation. One, the driver, writes code while the other, ...
The closest pair of points problem or closest pair problem is a problem of computational geometry: given points in metric space, find a pair of points with the smallest distance between them. The closest pair problem for points in the Euclidean plane [ 1 ] was among the first geometric problems that were treated at the origins of the systematic ...
A (B, N) pair is a pair of subgroups B and N of a group G such that the following axioms hold: G is generated by B and N. The intersection, T, of B and N is a normal subgroup of N. The group W = N/T is generated by a set S of elements of order 2 such that If s is an element of S and w is an element of W then sBw is contained in the union of ...
In classical mechanics, a kinematic pair is a connection between two physical objects that imposes constraints on their relative movement . German engineer Franz Reuleaux introduced the kinematic pair as a new approach to the study of machines [ 1 ] that provided an advance over the notion of elements consisting of simple machines .
Ordered pairs of scalars are sometimes called 2-dimensional vectors. (Technically, this is an abuse of terminology since an ordered pair need not be an element of a vector space.) The entries of an ordered pair can be other ordered pairs, enabling the recursive definition of ordered n-tuples (ordered lists of n objects).
Pairing, sometimes known as bonding, is a process used in computer networking that helps set up an initial linkage between computing devices to allow communications between them.
Pair production often refers specifically to a photon creating an electron–positron pair near a nucleus. As energy must be conserved, for pair production to occur, the incoming energy of the photon must be above a threshold of at least the total rest mass energy of the two particles created. (As the electron is the lightest, hence, lowest ...