1. Nilpotent alternative algebras

   • M. I. Badalov

   OriginalPaper Pages: 167 - 181

2. Construction of decidable singular theories of two successor functions with an extra predicate

   • L. P. Lisovik

   OriginalPaper Pages: 181 - 189

3. Atom-free ideals of constructive boolean algebras

   • S. P. Odintsov

   OriginalPaper Pages: 190 - 203

4. Lattice of Mal'tsev theories

   • D. M. Smirnov

   OriginalPaper Pages: 203 - 209

5. Equality problem for center-by-metabelian Lie algebras

   • U. U. Umirbaev

   OriginalPaper Pages: 209 - 219

6. Connection between constructivizibility and strong constructivizibility for different classes of abelian groups

   • N. G. Khisamiev

   OriginalPaper Pages: 220 - 233

7. An example of a theory without weakly (∑, ∑) -atomic models

   • S. A. Chikhachëv

   OriginalPaper Pages: 233 - 237

8. Varieties of algebraic systems and propositional calculuses

   • A. A. Shum

   OriginalPaper Pages: 237 - 251