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Qu'est-ce (qui) est (B, N) pair - définition
STRUCTURE ON LIE GROUPS
BN pair; Tits system; (B,N) pair; BN-pair
(B, N) pair
In mathematics, a (B, N) pair is a structure on groups of Lie type that allows one to give uniform proofs of many results, instead of giving a large number of case-by-case proofs. Roughly speaking, it shows that all such groups are similar to the general linear group over a field.
Ordered pair
![[[Commutative diagram]] for the set product ''X''<sub>1</sub>×''X''<sub>2</sub>.](https://commons.wikimedia.org/wiki/Special:FilePath/CategoricalProduct-03.svg?width=200 "[[Commutative diagram]] for the set product ''X''<sub>1</sub>×''X''<sub>2</sub>.")
PAIR OF MATHEMATICAL OBJECTS; TUPLE OF SPECIFIC LENGTH (TUPLE LENGTH N=2)
Ordered pairs; Pair (mathematics); Pair (ordered); Ordered couple; Kuratowski pair; Kuratowski ordered pair; (a, b)
In mathematics, an ordered pair (a, b) is a pair of objects. The order in which the objects appear in the pair is significant: the ordered pair (a, b) is different from the ordered pair (b, a) unless a = b.
Cooper pair
PAIR OF ELECTRONS (OR OTHER FERMIONS) BOUND TOGETHER AT LOW TEMPERATURES IN A CERTAIN MANNER (ARBITRARILY SMALL ATTRACTION BETWEEN ELECTRONS IN A METAL CAN CAUSE A PAIRED STATE OF ELECTRONS TO HAVE A LOWER ENERGY THAN THE FERMI ENERGY -PAIR IS BOUND)
Cooper pairs; Cooper electron pair; Cooper Electron Pair; Cooper Pairs; Cooper-pair transistor; BCS pairs; Cooper pairing; Bardeen–Cooper–Schrieffer pair; Bardeen-Cooper-Schrieffer pair
In condensed matter physics, a Cooper pair or BCS pair (Bardeen–Cooper–Schrieffer pair) is a pair of electrons (or other fermions) bound together at low temperatures in a certain manner first described in 1956 by American physicist Leon Cooper.
Wikipédia
(B, N) pair
In mathematics, a (B, N) pair is a structure on groups of Lie type that allows one to give uniform proofs of many results, instead of giving a large number of case-by-case proofs. Roughly speaking, it shows that all such groups are similar to the general linear group over a field. They were introduced by the mathematician Jacques Tits, and are also sometimes known as Tits systems.
