Semigroup Varieties on Whose Free Objects Almost All Fully Invariant Congruences are Weakly Permutable B. M. Vernikov OriginalPaper Pages: 357 - 364
Complexity of Categorical Theories with Computable Models S. S. GoncharovB. Khoussainov OriginalPaper Pages: 365 - 373
The Computable Dimension of I-Trees of Infinite Height N. T. KogabaevO. V. KudinovR. Miller OriginalPaper Pages: 393 - 407
Elementary Equivalence of Derived Structures of Free Semigroups, Unars, and Groups A. G. Pinus OriginalPaper Pages: 408 - 417
The Löwenheim—Skolem—Mal'tsev Theorem for ℍ\(\mathbb{F}\)-Structures V. G. Puzarenko OriginalPaper Pages: 418 - 423