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Tightness of certain monomials |
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| Authors: | WeiDeng Cui |
| Affiliation: | 1.Mathematical Sciences Center,Tsinghua University,Beijing,China |
| Abstract: | For a quantized enveloping algebra of finite type, one can associate a natural monomial to a dominant weight. We show that these monomials for types A5 and D4 are semitight(i.e., a Z-linear combination of elements in the canonical basis) by a direct calculation. |
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