Abstract
We study Problem 8.31 in [1] of the description of finite weakly factorizable groups, i.e., the groups whose every proper subgroup is complemented in a larger subgroup. By Lemma 1 of [2], the subdirect product of a completely factorizable group (such groups were studied by Ph. Hall and N. V. Baeva (Chernikova)) and a weakly factorizable group is a weakly factorizable group. In connection with a remark in [2], we observe that a dihedral 2-group is always weakly factorizable but, in general, it cannot even be obtained from the groups of prime order by repeated application of the lemma. Theorem 1, basing on the available maximal factorizations, shows that there exist exactly three finite simple nonabelian groups with complemented maximal subgroups. Theorem 2 confirms the conjecture of [2] on uniqueness of a finite simple nonabelian group with the property of weak factorizability. Earlier Theorems 1 and 2 were proven in special cases by A. G. Likharev.
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References
The Kourovka Notebook. Unsolved Problems in Group Theory. Vol. 15, Inst. Math. (Novosibirsk), Novosibirsk (2002).
Levchuk V. M., “On weakly factorizable groups,” Mat. Zametki, 73, No. 4, 565–572 (2003).
Hall Ph., “Complemented groups,” J. London Math. Soc., 12, No. 2, 201–204 (1937).
Baeva N. V., “A completely factorizable groups,” Dokl. Akad. Nauk SSSR, 92, No. 5, 877–880 (1953).
Chernikov N. S., Groups with Given Properties of a System of Subgroups [in Russian], Nauka, Moscow (1980).
Ito N., “On the factorizations of the linear fractional group LF(2, p n),” Acta Sci. Math., 15, No. 1, 79–84 (1953).
Conway J. H., Curtis R. T., Norton S. P., Parker R. A., and Wilson R. A., Atlas of Finite Groups. Maximal Subgroups and Ordinary Characters for Simple Groups, Clarendon Press, Oxford (1985).
Kleidman P. and Liebeck M. W., The Subgroup Structure of the Finite Classical Groups, Cambridge Univ. Press, Cambridge (1990) (London Math. Soc. Lecture Notes; 129).
Aschbacher M., “On the maximal subgroups of the finite classical groups,” Invent. Math., 76, No. 3, 469–514 (1984).
Liebeck M. W., Praeger C. E., and Saxl J., The Maximal Factorizations of the Finite Simple Groups and Their Automorphism Groups, Amer. Math. Soc., Providence, RI (1990) (Mem. Amer. Math. Soc.; 432(86)).
Likharev A. G., “On weakly factorizable Lie type groups of small ranks and sporadic groups, ” in: Algebra and Model Theory 4 [in Russian], NGTU, Novosibirsk, 2003, pp. 56–61.
Likharev A. G., “On finite weakly factorizable groups,” in: Abstracts: International Algebraic Conference, Moscow, Moscow Univ., 2004, pp. 88–89.
Tyutyanov V. N., “Finite simple groups with complemented maximal subgroups,” in: Abstracts: International Algebraic Conference (29.08–3.09.2005), UrGY, Ekaterinburg, 2005, pp. 78–79.
Levchuk V. M., “Functions on finite groups and some unsolved problems,” in: Abstracts: International Conference “Classes of Groups and Algebras” (5–7.10.2005), Gomel’Univ., Gomel’, 2005, pp. 72–73.
Carter R., Simple Groups of Lie Type, Wiley and Sons, New York (1972).
Bourbaki N., Lie Groups and Algebras. Chapters 4-6 [Russian translation], Mir, Moscow (1982).
Mwene B., “On the subgroups of the group PSL(4, 2m),” J. Algebra, 41, No. 1, 79–107 (1976).
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Original Russian Text Copyright © 2006 Levchuk V. M. and Likharev A. G.
The authors were supported by the Russian Foundation for Basic Research (Grants 03-01-00905 and 06-01-00824a).
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Translated from Sibirskiĭ Matematicheskiĭ Zhurnal, Vol. 47, No. 4, pp. 798–810, July–August, 2006.
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Levchuk, V.M., Likharev, A.G. Finite simple groups with complemented maximal subgroups. Sib Math J 47, 659–668 (2006). https://doi.org/10.1007/s11202-006-0077-7
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DOI: https://doi.org/10.1007/s11202-006-0077-7