OALib Journal期刊
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拟分裂情形下仿射\,Weyl群\,$\widetilde{\bmC}_{\bm4}$~的胞腔
, PP. 61-75
Keywords: 仿射~Weyl~群,带权的\,Coxeter\,群,拟分裂情形,胞腔,划分
Abstract:
仿射~Weyl~群\,$(\widetilde{C}_4,\,S)$\,可被看成仿射\,Weyl\,群\,$(\widetilde{A}_7,\,\widetilde{S})$~在某个群自同构\,$\alpha$\,下的不动点集合.记\,$\widetilde{l}:\widetilde{A}_7\longrightarrow\mathbf{\mathbf{N}}$\,是仿射\,Weyl\,群\,$\widetilde{A}_7$\,上的长度函数.则\,$\widetilde{l}$\,在\,$\widetilde{C}_4$\,上的限制为\,$\widetilde{C}_4$\,的权函数记作\,$L$.本文给出带权\,Coxeter\,群\,$(\widetilde{C}_4,\,L)$\,的胞腔分解.
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