Representations of algebras from varieties defined by some regular identities with nullary operation symbols J. Płonka OriginalPaper Pages: 441 - 457
A finitely based theory of a non-trivial language, with exactly ℵ0 subcovers C. Kalfa OriginalPaper Pages: 466 - 469
Equational compactness of bi-frames and projection algebras F. Wehrung OriginalPaper Pages: 478 - 515
The equational theory of union-free algebras of relations H. AndrékaD. A. Bredikhin OriginalPaper Pages: 516 - 532