- Marthe Bonamy, Édouard Bonnet, Nicolas Bousquet, Pierre Charbit, Panos Giannopoulos, Eun Jung Kim 0002, Pawel Rzazewski, Florian Sikora, Stéphan Thomassé. EPTAS and Subexponential Algorithm for Maximum Clique on Disk and Unit Ball Graphs. Journal of the ACM, 68(2), 2021.
- Wojciech Czerwinski, Slawomir Lasota 0001, Ranko Lazic, Jérôme Leroux, Filip Mazowiecki. The Reachability Problem for Petri Nets Is Not Elementary. Journal of the ACM, 68(1), 2021.
- Leszek Gasieniec, Grzegorz Stachowiak. Enhanced Phase Clocks, Population Protocols, and Fast Space Optimal Leader Election. Journal of the ACM, 68(1), 2021.
- Shaddin Dughmi, Jason D. Hartline, Robert D. Kleinberg, Rad Niazadeh. Bernoulli Factories and Black-box Reductions in Mechanism Design. Journal of the ACM, 68(2), 2021.
- Artur Czumaj, Peter Davies. Exploiting Spontaneous Transmissions for Broadcasting and Leader Election in Radio Networks. Journal of the ACM, 68(2), 2021.
- Nicolas Tabareau, Éric Tanter, Matthieu Sozeau. The Marriage of Univalence and Parametricity. Journal of the ACM, 68(1), 2021.
- Andrzej S. Murawski, Nikos Tzevelekos. Game Semantics for Interface Middleweight Java. Journal of the ACM, 68(1), 2021.
- Chi Jin, Praneeth Netrapalli, Rong Ge 0001, Sham M. Kakade, Michael I. Jordan. On Nonconvex Optimization for Machine Learning: Gradients, Stochasticity, and Saddle Points. Journal of the ACM, 68(2), 2021.
- Éva Tardos. Invited Article Foreword. Journal of the ACM, 68(1), 2021.
- Michael B. Cohen, Yin Tat Lee, Zhao Song 0002. Solving Linear Programs in the Current Matrix Multiplication Time. Journal of the ACM, 68(1), 2021.