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Fuzzy subgroups of the direct product of a generalized quaternion group and a cyclic group of any odd order | ||
| Iranian Journal of Fuzzy Systems | ||
| مقاله 7، دوره 10، شماره 5، دی 2013، صفحه 97-112 اصل مقاله (352.65 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22111/ijfs.2013.1209 | ||
| نویسنده | ||
| Ju-Mok Oh* | ||
| Department of Mathematics, Gangneung-Wonju National University, 7, Jukheon-gil, Gangneung-si, Gangwon-do 210-702, Republic of Korea | ||
| چکیده | ||
| Bentea and T\u{a}rn\u{a}uceanu~(An. \c{S}tiin\c{t}. Univ. Al. I. Cuza Ia\c{s}, Ser. Nou\v{a}, Mat., {\bf 54(1)} (2008), 209-220) proposed the following problem: Find an explicit formula for the number of fuzzy subgroups of a finite hamiltonian group of type $Q_8\times \mathbb{Z}_n$ where $Q_8$ is the quaternion group of order $8$ and $n$ is an arbitrary odd integer. In this paper we consider more general group: the direct product of a generalized quaternion group of any even order and a cyclic group of any odd order. For this group we give an explicit formula for the number of fuzzy subgroups. | ||
| کلیدواژهها | ||
| Generalized quaternion group؛ Hamiltonian group؛ Fuzzy subgroups؛ Subgroup chain؛ Generating function | ||
| مراجع | ||
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\bibitem{AI79} M. Aigner, {\it Combinatorial theory}, Springer-Verlag, New York Inc., 1979. \bibitem{BT08} L. Bentea and M. T\u{a}rn\u{a}uceanu, {\em A note on the number of fuzzy subgroups of finite groups}, An. \c{S}tiin\c{t}. Univ. Al. I. Cuza Ia\c{s}, Ser. Nou\v{a}, Mat., {\bf 54(1)} (2008), 209-220. \bibitem{DA81} P. S. Das, {\em Fuzzy groups and level subgroups}, J. Math. Anal. Appl., {\bf 84} (1981), 264-269. \bibitem{MM01} V. Murali and B. B. Makamba, {\em On an equivalence of fuzzy subgroups I}, Fuzzy Sets and Systems, {\bf 123} (2001), 259-264. \bibitem{MM03} V. Murali and B. B. Makamba, {\em On an equivalence of fuzzy subgroups II}, Fuzzy Sets and Systems, {\bf 136} (2003), 93-104. \bibitem{MM04} V. Murali and B. B. Makamba, {\em Counting the number of fuzzy subgroups of an abelian group of order $p^nq^m$}, Fuzzy Sets and Systems, {\bf 144} (2004), 459-470. \bibitem{MMV04} V. Murali and B. B. Makamba, {\em Fuzzy subgroups of finite abelian groups}, FJMS, {\bf 14} (2004), 113-125. \bibitem{JJpre} J. M. Oh, {\em The number of chains of subgroups of a finite cyclic group}, European J. Combin., {\bf 33} (2012), 259-266. \bibitem{RO94} J. S. Rose, {\it A course on group theory}, Dover publications, Inc., New York, 1994. \bibitem{SC64} W. R. Scott, {\it Group theory}, Prentice-Hall, Englewood Cliffs, NJ, 1964. \bibitem{TB08} M. T\u{a}rn\u{a}uceanu and L. Bentea, {\em On the number of fuzzy subgroups of finite abelian groups}, Fuzzy Sets and Systems, {\bf 159} (2008), 1084-1096. \bibitem{Tu95} A. Tucker, {\it Applied combinatorics}, John Wiley \& Sons, Inc., New York, 1995. \bibitem{WO04} A. C. Volf, {\em Conuting fuzzy subgroups and chains of subgroups}, Fuzzy Systems \& Artificial Intelligence, {\bf 10(3)} (2004), 191-200. | ||
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