تعداد نشریات | 31 |
تعداد شمارهها | 748 |
تعداد مقالات | 7,112 |
تعداد مشاهده مقاله | 10,247,911 |
تعداد دریافت فایل اصل مقاله | 6,900,947 |
On enumeration and classification of $EL^2$-semihypergroups and $EL^2$-$H_v$-semihypergroups with 2 elements | ||
Journal of Algebra and Related Topics | ||
دوره 11، شماره 2، اسفند 2023، صفحه 85-97 اصل مقاله (111.06 K) | ||
نوع مقاله: Research Paper | ||
شناسه دیجیتال (DOI): 10.22124/jart.2023.23376.1468 | ||
نویسندگان | ||
S. Mirvakili* 1؛ S. H. Ghazavi2؛ M. A. Dehghanizadeh3 | ||
1Department of Mathematics, Payame Noor University, P.O.BOX 19395-3697 Tehran, Iran, | ||
2Department of Mathematics, Shahid Ashrafi Esfahani University, Isfahan, Iran | ||
3Technical and Vocational University(TVU), Tehran, Iran | ||
چکیده | ||
$EL$-hypergroups were defined by Chvalina 1995. Till now, no exact statistics of $EL$-hypergroups have been done.\\ Moreover, there is no classification of $EL$-hypergroups and $EL^2$-hypergroups even over small sets. In this paper, we classify all $EL$-(semi)hypergroups over sets with two elements obtained from quasi ordered semigroups. Also, we characterize all quasi ordered $H_v$-group and then we enumerate the number of $EL^2$-$H_v$-hypergroups and $EL^2$-hypergroups of order 2. | ||
کلیدواژهها | ||
Ends lemma؛ $EL$-hypergroups؛ $H_v$-group؛ quasi order relation؛ partially order relation | ||
آمار تعداد مشاهده مقاله: 99 تعداد دریافت فایل اصل مقاله: 168 |