Free-monodromic mixed tilting sheaves on flag varieties

Free-monodromic mixed tilting sheaves on flag varieties
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旗形品种上的自由单向混合倾斜滑轮

DOI:
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发表时间:
2017
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通讯作者:
G. Williamson
G. Williamson
中科院分区:
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文献类型:
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作者:
Pramod N. Achar;Shotaro Makisumi;S. Riche;G. Williamson

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在本文中,我们提出了在第一作者和第三作者引入的“混合模块派生类别”的背景下,在(Kac-Moody)旗品种上构建“自由单向”倾斜反常滑轮的幺半群类别。该类别与特征 0 中的对应类别共享大部分属性,由 Bezrukavnikov-Yun 使用三角类别中的某些前对象定义。这种结构是即将为旗帜品种上的可构造滑轮构建“模块化科祖尔对偶性”等价物的主要新成分。
In this paper we propose a construction of a monoidal category of "free-monodromic" tilting perverse sheaves on (Kac-Moody) flag varieties in the setting of the "mixed modular derived category" introduced by the first and third authors. This category shares most of the properties of their counterpart in characteristic 0, defined by Bezrukavnikov-Yun using certain pro-objects in triangulated categories. This construction is the main new ingredient in the forthcoming construction of a "modular Koszul duality" equivalence for constructible sheaves on flag varieties.