Quasigroup covers of division groupoids
COMMENTATIONES MATHEMATICAE UNIVERSITATIS CAROLINAE(2023)
摘要
Let G be a division groupoid that is not a quasigroup. For each regular cardinal alpha > vertical bar G vertical bar we construct a quasigroup Q on G x alpha that is a quasigroup cover of G (i.e., G is a homomorphic image of Q and G is not an image of any quasigroup that is a proper factor of Q). We also show how to easily obtain quasigroup covers from free quasigroups.
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关键词
groupoid,division,quasigroup,cover
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