Morita equivalences of Ariki–Koike algebras
Morita equivalences of Ariki–Koike algebras
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DOI:
10.1007/s002090100371
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发表时间:
2000-04
影响因子:
0.8
通讯作者:
R. Dipper;Andrew Mathas
中科院分区:
文献类型:
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作者:
R. Dipper;Andrew Mathas
We prove that every Ariki–Koike algebra is Morita equivalent to a direct sum of tensor products of smaller Ariki–Koike algebras which haveq–connected parameter sets. A similar result is proved for the cyclotomicq–Schur algebras. Combining our results with work of Ariki and Uglov, the decomposition numbers for the Ariki–Koike algebras defined over fields of characteristic zero are now known in principle.