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Rectangular groupoids and related structures
The quasivariety of groupoids [Formula: see text] satisfying the implication [Formula: see text] generalises rectangular semigroups and central groupoids. We call them rectangular groupoids and find three combinatorial structures based upon arrays, matrices and graphs that are closely related. These...
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
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Elsevier
2013
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3688338/ https://www.ncbi.nlm.nih.gov/pubmed/23836949 http://dx.doi.org/10.1016/j.disc.2013.03.012 |