1. On extendability to \(F_\sigma \) ideals

   • Adam Kwela

   OriginalPaper 28 February 2022 Pages: 881 - 890

2. On decidability of amenability in computable groups

   • Karol Duda
   • Aleksander Ivanov

   OriginalPaper 03 March 2022 Pages: 891 - 902

3. Disjunctive logic programs, answer sets, and the cut rule

   • Éric Martin

   OriginalPaper Open access 04 March 2022 Pages: 903 - 937

   

4. Weak essentially undecidable theories of concatenation

   • Juvenal Murwanashyaka

   OriginalPaper Open access 07 March 2022 Pages: 939 - 976

   

5. Dividing lines in unstable theories and subclasses of Baire 1 functions

   • Karim Khanaki

   OriginalPaper 09 March 2022 Pages: 977 - 993

   

6. On well-splitting posets

   • Dušan Repovš
   • Lyubomyr Zdomskyy

   OriginalPaper 09 March 2022 Pages: 995 - 1005

7. Enhancing induction in a contraction free logic with unrestricted abstraction: from \(\mathbf {Z}\) to \(\mathbf {Z}_2\)

   • Uwe Petersen

   OriginalPaper 14 March 2022 Pages: 1007 - 1051

   

8. Ramsey degrees of ultrafilters, pseudointersection numbers, and the tools of topological Ramsey spaces

   • Natasha Dobrinen
   • Sonia Navarro Flores

   OriginalPaper 15 March 2022 Pages: 1053 - 1090

   

9. Destructibility and axiomatizability of Kaufmann models

   • Corey Bacal Switzer

   OriginalPaper Open access 26 March 2022 Pages: 1091 - 1111

10. \(\Delta ^0_1\) variants of the law of excluded middle and related principles

    • Makoto Fujiwara

    OriginalPaper 29 April 2022 Pages: 1113 - 1127

    

11. Implicit recursion-theoretic characterizations of counting classes

    • Ugo Dal Lago
    • Reinhard Kahle
    • Isabel Oitavem

    OriginalPaper 03 May 2022 Pages: 1129 - 1144

    

12. The existence of states based on Glivenko semihoops

    • Pengfei He
    • Juntao Wang
    • Jiang Yang

    OriginalPaper 18 May 2022 Pages: 1145 - 1170