Iranian Mathematical Society (IMS)Bulletin of the Iranian Mathematical Society1017-060X40120140201On the norm of the derived subgroups of all subgroups of a finite group281291495ENZhencaiShenLMAM and School of Mathematical Sciences, Peking
University,
Beijing, 100871, China.ShirongLiGuangxi UniversityWujieShiChongqing University of Arts and SciencesJournal Article20120630In this paper, we give a complete proof of Theorem 4.1(ii) and a new elementary proof of Theorem 4.1(i) in [Li and Shen, On the intersection of the normalizers of the derived subgroups of all <br />subgroups of a finite group, J. Algebra, 323 (2010) 1349--1357]. <br />In addition, we also give a generalization of Baer's Theorem.http://bims.iranjournals.ir/article_495_6dc0df68eafac1db15b433778ac7a5c1.pdf