Symmetric invariants and cohomology of groups
نویسندگان
چکیده
منابع مشابه
The Vector Invariants of Symmetric Groups
LetR be a commutative ring and let n,m be two positive integers. Let AR(n,m) := R[x11, . . . , x1m, . . . , xn1, . . . , xnm] be the polynomial ring in the commuting independent variables x11, . . . , x1m, . . . , xn1, . . . , xnm with coefficients in R. The symmetric group on n letters Sn acts on AR(n,m) by means of σ(xij) = xσ(i) j for all σ ∈ Sn and i = 1, . . . , n ; j = 1, . . . , m. Let u...
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ژورنال
عنوان ژورنال: Mathematische Annalen
سال: 1990
ISSN: 0025-5831,1432-1807
DOI: 10.1007/bf01446902