-medial -quasigroups
Tomáš Kepka (1991)
Commentationes Mathematicae Universitatis Carolinae
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For , every -medial -quasigroup is medial. If , then there exist -medial -quasigroups which are not -medial.
Tomáš Kepka (1991)
Commentationes Mathematicae Universitatis Carolinae
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For , every -medial -quasigroup is medial. If , then there exist -medial -quasigroups which are not -medial.
Václav Havel, Miloslava Sedlářová (1994)
Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
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Václav J. Havel (1993)
Archivum Mathematicum
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In the present paper we construct the accompanying identity of a given quasigroup identity . After that we deduce the main result: is isotopically invariant (i.e., for every guasigroup it holds that if is satisfied in then is satisfied in every quasigroup isotopic to ) if and only if it is equivalent to (i.e., for every quasigroup it holds that in either are both satisfied or both not).