Geodesic
Equivalential algebras with conjunction on the regular elements
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica, Tome 20 (2021), pp. 63-75.

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We introduce the definition of the three-element equivalential algebra R with conjunction on the regular elements. We study the variety generated by R and prove the Representation Theorem. Then, we construct the finitely generated free algebras and compute the free spectra in this variety.
Keywords: Fregean varieties, equivalential algebras, free algebras, free spectra 
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Przybyło, Sławomir. Equivalential algebras with conjunction on the regular elements. Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica, Tome 20 (2021), pp. 63-75. http://geodesic.mathdoc.fr/item/AUPCM_2021_20_a4/

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