Three-variable equations of posets Jaroslav Ježek (2002) Czechoslovak Mathematical Journal Similarity: We find an independent base for three-variable equations of posets.
Constructions of (2,n)-varieties of groupoids for n = 7, 8, 9 Lidija Goraèinova-Ilieva, Smile Markovski (2007) Publications de l'Institut Mathématique Similarity:
Distributive groupoids are symmetric-by-medial: An elementary proof David Stanovský (2008) Commentationes Mathematicae Universitatis Carolinae Similarity: We present an elementary proof (purely in equational logic) that distributive groupoids are symmetric-by-medial.