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Proceedings of the American Mathematical Society
Proceedings of the American Mathematical Society
ISSN 1088-6826(e) ISSN 0002-9939(p)

     

Cartan invariants of group algebras of finite groups

Author(s): Shigeo Koshitani
Journal: Proc. Amer. Math. Soc. 124 (1996), 2319-2323.
MSC (1991): Primary 20C05, 20C20
MathSciNet review: 1328356
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Abstract: We give a result on Cartan invariants of the group algebra $kG$ of a finite group $G$ over an algebraically closed field $k$, which implies that if the Loewy length (socle length) of the projective indecomposable $kG$-module corresponding to the trivial $kG$-module is four, then $k$ has characteristic 2. The proof is independent of the classification of finite simple groups.


References:

[1]
W. Feit, The representation theory of finite groups, North-Holland, Amsterdam, 1982. MR 83g:20001

[2]
S. Koshitani, Group algebras of finite $p$-solvable groups with radicals of the fourth power zero, Proc. Royal Soc. Edinburgh 92A (1982), 205--231. MR 84b:2007

[3]
P. Landrock, Finite group algebras and their modules, London Math. Soc. Lecture Note Series Vol.84, Cambridge, 1983. MR 85h:20002

[4]
P. Landrock, The Cartan matrix of a group algebra modulo any power of its radical, Proc. Amer. Math. Soc. 88 (1983), 205--206. MR 84f:20010

[5]
G.O. Michler, Blocks and centers of group algebras, in Lectures on rings and modules, Springer Lecture Notes in Math. Vol.246, Springer, Berlin, 1972, pp.429--563. MR 48:11274

[6]
W. Müller, Unzerlegbare Moduln über artinschen Ringen, Math. Z. 137 (1974), 197--226. MR 50:4665

[7]
T. Okuyama, On blocks of finite groups with radical cube zero, Osaka J. Math. 23 (1986), 461--465. MR 87k:20024

[8]
D.A.R. Wallace, Group algebras with radicals of square zero, Proc. Glasgow Math. Assoc. 5 (1962), 158--159. MR 25:3986

[9]
P.J. Webb, The Auslander-Reiten quiver of a finite group, Math. Z. 179 (1982), 97--121. MR 83b:16029


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Additional Information:

Shigeo Koshitani
Affiliation: Department of Mathematics, Faculty of Science, Chiba University, Yayoi-cho, Chiba-city, 263, Japan
Email: koshitan@math.s.chiba-u.ac.jp

DOI: 10.1090/S0002-9939-96-03401-6
PII: S 0002-9939(96)03401-6
Received by editor(s): August 17, 1994
Received by editor(s) in revised form: February 7, 1995
Additional Notes: Supported in part by the Alexander von Humboldt Foundation, the Mathematical Prizes Fund, the University of Oxford and the Sasakawa Foundation.
Dedicated: Dedicated to Professor Takeshi Kondo on his 60th birthday
Communicated by: Ronald M. Solomon
Copyright of article: Copyright 1996, American Mathematical Society




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