1. Arithmetical conditions of orbit sizes of linear groups of odd order

   • Yong Yang

   OriginalPaper 17 January 2020 Pages: 1 - 14

2. Automaton semigroups and groups: On the undecidability of problems related to freeness and finiteness

   • Daniele D’Angeli
   • Emanuele Rodaro
   • Jan Philipp Wächter

   OriginalPaper 12 February 2020 Pages: 15 - 52

3. On the question “Can one hear the shape of a group?” and a Hulanicki type theorem for graphs

   • Artem Dudko
   • Rostislav Grigorchuk

   OriginalPaper 04 April 2020 Pages: 53 - 74

4. The structure of random homeomorphisms

   • Udayan B. Darji
   • Márton Elekes
   • Zoltán Vidnyánszky

   OriginalPaper 14 May 2020 Pages: 75 - 113

5. Gaps in probabilities of satisfying some commutator-like identities

   • Costantino Delizia
   • Urban Jezernik
   • Chiara Nicotera

   OriginalPaper 04 April 2020 Pages: 115 - 140

6. The dimension of solution sets to systems of equations in algebraic groups

   • Anton A. Klyachko
   • Maria A. Ryabtseva

   OriginalPaper 14 May 2020 Pages: 141 - 154

7. On the generalized Hilbert-Kunz function and multiplicity

   • Hailong Dao
   • Ilya Smirnov

   OriginalPaper 14 May 2020 Pages: 155 - 184

8. Stirling posets

   • Mahir Bilen Can
   • Yonah Cherniavsky

   OriginalPaper 14 May 2020 Pages: 185 - 219

9. A graph-theoretic description of scale-multiplicative semigroups of automorphisms

   • Cheryl E. Praeger
   • Jacqui Ramagge
   • George A. Willis

   OriginalPaper 14 May 2020 Pages: 221 - 265

10. Automatic continuity of ℵ₁-free groups

    • Samuel M. Corson

    OriginalPaper 14 May 2020 Pages: 267 - 285

11. The Calkin algebra is ℵ₁-universal

    • Ilijas Farah
    • Ilan Hirshberg
    • Alessandro Vignati

    OriginalPaper 14 May 2020 Pages: 287 - 309

12. Counting problems in graph products and relatively hyperbolic groups

    • Ilya Gekhtman
    • Samuel J. Taylor
    • Giulio Tiozzo

    OriginalPaper 14 May 2020 Pages: 311 - 371

13. Values of Iwahori-fixed vectors in the non-split Bessel model on GSp(2n)

    • Will Grodzicki

    OriginalPaper 14 May 2020 Pages: 373 - 414

14. On Riemann surfaces of genus g with 4g–4 automorphisms

    • Sebastián Reyes-Carocca

    OriginalPaper 14 May 2020 Pages: 415 - 436

15. Reduced group schemes as iterative differential Galois groups

    • Andreas Maurischat

    OriginalPaper 20 May 2020 Pages: 437 - 455

16. On κ-compact cardinals

    • Moti Gitik

    OriginalPaper 20 May 2020 Pages: 457 - 483

17. Enriched chain polytopes

    • Hidefumi Ohsugi
    • Akiyoshi Tsuchiya

    OriginalPaper 20 May 2020 Pages: 485 - 500