1. Finiteness of A Set of Quasivarieties of Torsion-Free Metabelian Groups of Axiomatic Rank 2

   • Yu. A. Avtsinova

   OriginalPaper 27 July 2011 Pages: 195 - 210

2. O-Stable Theories

   • B. S. Baizhanov
   • V. V. Verbovskii

   OriginalPaper 27 July 2011 Pages: 211 - 225

3. Finite alperin 2-groups with cyclic second commutants

   • B. M. Veretennikov

   OriginalPaper 27 July 2011 Pages: 226 - 244

4. A hybrid calculus for logic N ^* : residual finiteness and decidability

   • S. A. Drobyshevich

   OriginalPaper 27 July 2011 Pages: 245 - 256

5. A quasivariety lattice of torsion-free soluble groups

   • A. L. Polushin

   OriginalPaper 27 July 2011 Pages: 257 - 271

6. Abelian and Hamiltonian varieties of groupoids

   • A. A. Stepanova
   • N. V. Trikashnaya

   OriginalPaper 27 July 2011 Pages: 272 - 278

7. Turing jumps in the Ershov hierarchy

   • M. Kh. Faizrakhmanov

   OriginalPaper 27 July 2011 Pages: 279 - 289

8. Sessions of the seminar “Algebra i Logika”

   News 27 July 2011 Pages: 290 - 290