1. The Category of Equivalence Relations

   • V. Delle Rose
   • L. San Mauro
   • A. Sorbi

   OriginalPaper 03 December 2021 Pages: 295 - 307

2. Complexity of Lambek Calculi with Modalities and of Total Derivability in Grammars

   • S. M. Dudakov
   • B. N. Karlov
   • E. M. Fofanova

   OriginalPaper 03 December 2021 Pages: 308 - 326

3. Bruhat Decomposition for Carpet Subgroups of Chevalley Groups Over Fields

   • Ya. N. Nuzhin
   • A. V. Stepanov

   OriginalPaper 02 December 2021 Pages: 327 - 335

4. Levi Classes of Quasivarieties of Groups with Commutator Subgroup of Order p

   • S. A. Shakhova

   OriginalPaper 02 December 2021 Pages: 336 - 347

5. Sessions of the Seminar “Algebra i Logika”

   Events 03 December 2021 Pages: 348 - 348