Abstract.
In this note, we prove that for the standard representation Vof the Weyl group W of a semi-simple algebraic group of type A n , B n , C n , D n , F 4 and G 2 over \(\mathbb{C}\), the projective variety \(\mathbb{P}(V^m)/W\) is projectively normal with respect to the descent of \(\mathcal{O}(1)^{\otimes |W|}\), where V m denote the direct sum of m copies of V.
Similar content being viewed by others
References
Chevalley C, Invariants of finite groups generated by reflections, Am. J. Math. 77 (1955) 778–782
Chu H, Hu S-J and Kang M-C, A note on projective normality, Proc. Amer. Math. Soc. PII: S 0002-9939(2010)10777-3, doi:10.1090/S0002-9939-2010-10777-3
Fleischmann P, A new degree bound for vector invariants of symmetric groups, Trans. Am. Math. Soc. 350 (1998) 1703–1712
Hartshorne R, Algebraic Geometry, Graduate Texts in Math., 52 (New York-Heidelberg: Springer-Verlag) (1977)
Humphreys J E, Introduction to Lie algebras and representation theory (Berlin-Heidelberg: Springer) (1972)
Humphreys J E, Reflection Groups and Coxeter Groups (Cambridge: Cambridge Univ. Press) (1990)
Hunziker M, Classical invariant theory for finite reflection groups, Transform. Groups 2(2) (1997) 147–163
Kane R, Reflection Groups and Invariant theory, CMS Books in Mathematics (Springer-Verlag) (2001)
Kannan S S, Pattanayak S K and Sardar P, Projective normality of finite groups quotients, Proc. Am. Math. Soc. 137(3) (2009) 863–867
Kraft H, Slodowy P and Springer T A, Algebraic Transformation Groups and Invariant Theory (Birkhauser) (1989)
Mehta M L, Basic set of invariant polynomials for finite reflection groups, Commun. Algebra 16(5) (1988) 1083–1098
Mumford D, Fogarty J and Kirwan F, Geometric Invariant Theory (Springer-Verlag) (1994)
Newstead P E, Introduction to Moduli Problems and Orbit Spaces, TIFR Lecture Notes (1978)
Noether E, Der Endlichkeitssatz der Invarianten endlicher Gruppen, Math. Ann. 77 (1916) 89–92
Robinson D J S, A Course in the Theory of Groups, 2nd ed. (Springer-Verlag) (1996)
Serre J P, Groupes finis d’automorphisms d’anneaux locaux reguliers, Colloq. d’Alg. Ecole Norm. de Jeunes Filles, Paris (1967) pp. 1–11
Shephard G C and Todd J A, Finite unitary reflection groups, Can. J. Math. 6 (1954) 274–304
Wallach N R, Invariant differential operators on a reductive Lie algebra and Weyl group representations. J. Am. Math. Soc. 6(4) (1993) 779–816
Weyl H, The Classical Groups: Their Invariants and Representations (Princeton Univ. Press) (1946)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
KANNAN, S., PATTANAYAK, S. Projective normality of Weyl group quotients. Proc Math Sci 121, 19–26 (2011). https://doi.org/10.1007/s12044-011-0007-x
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12044-011-0007-x