- Pantelis E. Eleftheriou. Small sets in Mann pairs. Arch. Math. Log., 60(3-4):317-327, 2021.
- Stefano Bonzio, Tommaso Moraschini, Michele Pra Baldi. Logics of left variable inclusion and Płonka sums of matrices. Arch. Math. Log., 60(1):49-76, 2021.
- Guram Bezhanishvili, Nick Bezhanishvili, Joel Lucero-Bryan, Jan van Mill. Tree-like constructions in topology and modal logic. Arch. Math. Log., 60(3-4):265-299, 2021.
- Ethan McCarthy. Pointwise complexity of the derivative of a computable function. Arch. Math. Log., 60(7):981-994, 2021.
- Makoto Fujiwara, Tatsuji Kawai. Characterising Brouwer's continuity by bar recursion on moduli of continuity. Arch. Math. Log., 60(1):241-263, 2021.
- Gerhard Jäger. Short note: Least fixed points versus least closed points. Arch. Math. Log., 60(7):831-835, 2021.
- Sakaé Fuchino, André Ottenbreit Maschio Rodrigues, Hiroshi Sakai. Strong downward Löwenheim-Skolem theorems for stationary logics, I. Arch. Math. Log., 60(1):17-47, 2021.
- Tobias Fritz. Quantum logic is undecidable. Arch. Math. Log., 60(3-4):329-341, 2021.
- Grigor Sargsyan. $AD_{\mathbb {R}}$ implies that all sets of reals are Θ universally Baire. Arch. Math. Log., 60(1):1-15, 2021.
- Achilles A. Beros, Konstantinos A. Beros, Daniel Flores, Umar Gaffar, David J. Webb, Soowhan Yoon. Learning theory in the arithmetic hierarchy II. Arch. Math. Log., 60(3-4):301-315, 2021.