| 191 | -- | 0 | Vasco Brattka, Rod Downey, Julia F. Knight, Steffen Lempp. Preface of the special issue for the Oberwolfach Workshop on Computability Theory 2018 |
| 193 | -- | 241 | Uri Andrews, Andrea Sorbi. Joins and meets in the structure of ceers |
| 243 | -- | 252 | Ellen Chih, Rod Downey. Splitting theorems and low degrees |
| 253 | -- | 263 | Barbara F. Csima, Damir D. Dzhafarov, Denis R. Hirschfeldt, Carl G. Jockusch Jr., Reed Solomon, Linda Brown Westrick. The reverse mathematics of Hindman's Theorem for sums of exactly two elements |
| 265 | -- | 280 | Ekaterina B. Fokina, Dino Rossegger, Luca San Mauro. Measuring the complexity of reductions between equivalence relations |
| 281 | -- | 304 | Guido Gherardi, Alberto Marcone, Arno Pauly. Projection operators in the Weihrauch lattice |
| 305 | -- | 346 | Noam Greenberg, Rutger Kuyper, Dan Turetsky. Cardinal invariants, non-lowness classes, and Weihrauch reducibility |
| 347 | -- | 358 | Matthew Harrison-Trainor. A first-order theory of Ulm type |
| 359 | -- | 375 | Matthew Harrison-Trainor, Bakh Khoussainov, Daniel Turetsky. Effective aspects of algorithmically random structures |
| 377 | -- | 387 | Ulrich Kohlenbach. On the reverse mathematics and Weihrauch complexity of moduli of regularity and uniqueness |
| 389 | -- | 398 | Iván Ongay-Valverde, Noah David Schweber. k-surviving degrees |
| 399 | -- | 415 | Klaus Weihrauch. Computable planar curves intersect in a computable point |