頁籤選單縮合
題名 | Truncated Convolution of Character Sheaves= |
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作者 | Lusztig, G.; |
期刊 | Bulletin of the Institute of Mathematics, Academia Sinica New Series |
出版日期 | 20150300 |
卷期 | 10:1 2015.03[民104.03] |
頁次 | 頁1-72 |
分類號 | 313.2 |
語文 | eng |
關鍵詞 | Character sheaf; Perverse sheaf; Convolution; Weyl group; |
英文摘要 | Let G G be a reductive, connected algebraic group over an algebraic closure of a finite field. We define a tensor structure on the category of perverse sheaves on G G which are direct sums of unipotent character sheaves in a fixed two-sided cell; we show that this is equivalent to the centre with a known monoidal abelian category (a categorification of the J J -ring associated to the same two-sided cell). |
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