Sign sequences and decomposition numbers
Sign sequences and decomposition numbers
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符号序列和分解数
DOI:
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发表时间:
2011
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通讯作者:
Wei Hao Teo
中科院分区:
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作者:
Kai Meng Tan;Wei Hao Teo
We obtain a closed formula for the v-decomposition numbers dλμ(v) arising from the canonical basis of the Fock space representation of Uv(ŝle), where the partition λ is obtained from μ by moving some nodes in its Young diagram, all of which having the same e-residue. We also show that when these v-decomposition numbers are evaluated at v = 1, we obtain the corresponding decomposition numbers for the Schur algebras and symmetric groups.