1. Independent Axiomatizability of Quasivarieties of Torsion-Free Nilpotent Groups

   • A. I. Budkin

   OriginalPaper 20 September 2021 Pages: 79 - 88

2. General Recursive Realizability and Intuitionistic Logic

   • A. Yu. Konovalov

   OriginalPaper 20 September 2021 Pages: 89 - 94

3. Lengths of Roots of Polynomials in a Hahn Field

   • J. F. Knight
   • K. Lange

   OriginalPaper 20 September 2021 Pages: 95 - 107

4. Simple Right-Symmetric (1, 1)-Superalgebras

   • A. P. Pozhidaev
   • I. P. Shestakov

   OriginalPaper 23 September 2021 Pages: 108 - 114

5. Coordinate Groups of Irreducible Algebraic Sets Over Divisible Metabelian r-Groups

   • N. S. Romanovskii

   OriginalPaper 20 September 2021 Pages: 115 - 127

6. Some Properties of the Upper Semilattice of Computable Families of Computably Enumerable Sets

   • M. Kh. Faizrakhmanov

   OriginalPaper 20 September 2021 Pages: 128 - 138

7. Universal Functions and Σ_ω-Bounded Structures

   • A. N. Khisamiev

   OriginalPaper 20 September 2021 Pages: 139 - 153

8. Structure of k-Closures of Finite Nilpotent Permutation Groups

   • D. V. Churikov

   OriginalPaper 20 September 2021 Pages: 154 - 159

9. Sessions of the Seminar “Algebra i Logika”

   Events 22 September 2021 Pages: 160 - 161