1. Symmetric subalgebras of monocomposition algebras

   • A. T. Gainov

   OriginalPaper Pages: 313 - 327

2. Some lattice-invariant properties of classes of recursively enumerable sets

   • A. N. Degtev

   OriginalPaper Pages: 328 - 333

3. Decomposition numbers of the group

   • A. S. Kondrat'ev

   OriginalPaper Pages: 333 - 349

4. Minimal permutation representation of Thompson's simple group

   • V. D. Mazurov

   OriginalPaper Pages: 350 - 361

5. Interpolation in infinitely layered extensions of provability logic

   • L. L. Maksimova

   OriginalPaper Pages: 361 - 376

6. Strict lattice determination of mixed nilpotent groups

   • B. V. Yakovlev

   OriginalPaper Pages: 376 - 384