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The Möbius function of PSL(3,2p) for any prime p
International Journal of Algebra and Computation ( IF 0.8 ) Pub Date : 2021-05-31 , DOI: 10.1142/s0218196721400014 Martino Borello 1 , Francesca Dalla Volta 2 , Giovanni Zini 3
International Journal of Algebra and Computation ( IF 0.8 ) Pub Date : 2021-05-31 , DOI: 10.1142/s0218196721400014 Martino Borello 1 , Francesca Dalla Volta 2 , Giovanni Zini 3
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Let G be the simple group PSL ( 3 , 2 p ) , where p is a prime number. For any subgroup H of G , we compute the Möbius function μ ( H ) of H in the subgroup lattice of G . To this aim, we describe the intersections of maximal subgroups of G . We point out some connections of the Möbius function with other combinatorial objects, and, in this context, we compute the reduced Euler characteristic of the order complex of the subposet of r -subgroups of PGL ( 3 , q ) , for any prime r and any prime power q .
中文翻译:
任意素数 p 的 PSL(3,2p) 的莫比乌斯函数
让G 成为简单的群体PSL ( 3 , 2 p ) , 在哪里p 是一个素数。对于任何子组H 的G ,我们计算莫比乌斯函数μ ( H ) 的H 在子群格子中G . 为此,我们描述了最大子群的交集G . 我们指出了莫比乌斯函数与其他组合对象的一些联系,并且在这种情况下,我们计算了子集的阶复数的约简欧拉特征r - 亚组PGL ( 3 , q ) , 对于任何素数r 和任何主要力量q .
更新日期:2021-05-31
中文翻译:
任意素数 p 的 PSL(3,2p) 的莫比乌斯函数
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