Concept information
Terme préférentiel
principal homogeneous space
Définition
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In mathematics, a principal homogeneous space, or torsor, for a group G is a homogeneous space X for G in which the stabilizer subgroup of every point is trivial. Equivalently, a principal homogeneous space for a group G is a non-empty set X on which G acts freely and transitively (meaning that, for any x, y in X, there exists a unique g in G such that x·g = y, where · denotes the (right) action of G on X).
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Principal_homogeneous_space)
Concept générique
Traductions
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français
URI
http://data.loterre.fr/ark:/67375/PSR-PN64B2Q9-R
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