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Listar por autor "Akhlaghi, Z."

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Listar por autor "Akhlaghi, Z."

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    Structure of normal subgroups with three G-class sizes 
    Akhlaghi, Z.; Beltrán, Antonio; Felipe Román, María Josefa; Khatami, M. (Springer Verlag (Germany), 2012-07)
    Let G be a finite group and N be a normal subgroup of G. Suppose that the set of G-conjugacy class sizes of N is {1, m, n}, with m < n and m does not divide n. In this paper, we show that N is solvable, and we determine ...
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    The influence of p-regular class sizes on normal subgroups 
    Akhlaghi, Z.; Beltran, A.; Felipe Román, María Josefa (De Gruyter, 2013-07)
    Let G be a finite group and N be a normal subgroup of G and suppose that the p-regular elements of N have exactly two G-conjugacy class sizes. It is shown that N is solvable and that if H is a p-complement of N, then either ...