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A characterization ofL n (q) by the normalizers' orders of their sylow subgroups
Authors:Jianxing Bi
Institution:(1) Department of Mathematics, Liaoning University, 110036 Shenyang, China
Abstract:LetG be a finite group. If 
$$\left| {N_G (R_1 )} \right| = \left| {N_{L_n (q)} (R_2 )} \right|$$
for every primer, whereR 1 epsi Syl r G andR 2 epsi Syl r (L n (q)), thenG congL n (q).
Keywords:Finite simple group  Sylow subgroup  Normalizer
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