Non‐integrality of some Steinberg modules
Non‐integrality of some Steinberg modules
复制标题
某些 Steinberg 模块的非积分性
DOI:
10.1112/topo.12132
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发表时间:
2020
影响因子:
1.1
通讯作者:
Yasaki, Dan
中科院分区:
文献类型:
--
作者:
Miller, Jeremy;Patzt, Peter;Wilson, Jennifer C. H.;Yasaki, Dan
We prove that the Steinberg module of the special linear group of a quadratic imaginary number ring which is not Euclidean is not generated by integral apartment classes. Assuming the generalized Riemann hypothesis, this shows that the Steinberg module of a number ring is generated by integral apartment classes if and only if the ring is Euclidean. We also construct new cohomology classes in the top‐dimensional cohomology group of the special linear group of some quadratic imaginary number rings.
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