1. Hypersimple sets with retraceable complements

   • A. N. Degtev

   OriginalPaper Pages: 147 - 154

2. Computable numerations of morphisms

   • Yu L. Ershov

   OriginalPaper Pages: 155 - 191

3. An example of two elementarily equivalent, but nonisomorphic finitely generated metabelian groups

   • B. I. Zil'ber

   OriginalPaper Pages: 192 - 197

4. Index sets of degrees of unsolvability

   • S. Kallibekov

   OriginalPaper Pages: 198 - 204

5. Remarks on Vazhenin's paper “elementary properties of transformation semigroups of ordered sets“

   • A. G. Pinus

   OriginalPaper Pages: 205 - 205

6. On finite groups with solvable centralizers of involutions

   • S. A. Syskin

   OriginalPaper Pages: 206 - 216

7. Meetings of the seminar “algebra and logic”

   Events Pages: 217 - 217