关于单位矢量自旋轨道的一些评论

Pub Date : 2024-09-10 DOI:10.1016/j.jpaa.2024.107802
Tariq Syed
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引用次数: 0

摘要

对于 n∈N 和 2∈R× 的交换环 R,群 SLn(R) 作用于长度为 n 的单模向量集 Umn(R),而 Spin2n(R) 作用于单位向量集 U2n-1(R)。我们举例说明 Umn(R)/SLn(R)→U2n-1(R)/Spin2n(R) 的比较映射不具有双射性的环。
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Some remarks on spin-orbits of unit vectors

For nN and a commutative ring R with 2R×, the group SLn(R) acts on the set Umn(R) of unimodular vectors of length n and Spin2n(R) acts on the set of unit vectors U2n1(R). We give an example of a ring for which the comparison map Umn(R)/SLn(R)U2n1(R)/Spin2n(R) fails to be bijective.

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