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on enumeration of el-hyperstructures with 2 elements
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نویسنده
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mirvakili saeed ,ghazavi hossein
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منبع
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journal of mahani mathematical research - 2022 - دوره : 11 - شماره : 1 - صفحه:141 -153
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چکیده
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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 el²-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 hv-group and then we enumerate the number of el²-hv-hypergroups and el²-hypergroups of order 2.
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کلیدواژه
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ends lemma ,quasi order relation ,partially order relation
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آدرس
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payame noor university, department of mathematics, iran, university of shahid ashrafi esfahani, department of mathematics, iran
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پست الکترونیکی
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s.h.ghazavi@ashrafi.ac.ir
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Authors
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