| Subcritical bootstrap percolation via Toom contours Ivailo Hartarsky, R\'eka Szab\'o | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Sub-sampling and other considerations for efficient risk estimation in large portfolios Michael B. Giles, Abdul-Lateef Haji-Ali | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Subsidizing agricultural inputs in Senegal: Comparative analysis of three modes of intervention using a farm household model Aymeric Ricome (JRC), Kamel Louhichi, Sergio Gomez y Paloma (JRC) | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Succinct quantum proofs for properties of finite groups John Watrous (University of Calgary) | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Sufficient condition for compactness of the $\overline{\partial}$-Neumann operator using the Levi core John N. Treuer | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Sufficient Conditions for Conservativity of Minimal Quantum Dynamical Semigroups Alexander Chebotarev (Moscow State University), Franco Fagnola (Universit\`a di Genova) | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Superconductivity in Ultrasmall Grains: Introduction to Richardson's Exact Solution Jan von Delft, Fabian Braun | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Superiorization: The asymmetric roles of feasibility-seeking and objective function reduction Yair Censor | L4–5 Advanced | CC-BY | mirrored | 36 pp. | arxiv |
| Super Logic Programs Stefan Brass, Juergen Dix, Teodor C. Przymusinski | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Supermagic labeling of $C_n\Box C_m$ Dalibor Froncek | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Supermartingale Brenier's Theorem with full-marginals constraint Erhan Bayraktar, Shuoqing Deng, Dominykas Norgilas | L4–5 Advanced | CC-BY | mirrored | 41 pp. | arxiv |
| Supervising the Decoder of Variational Autoencoders to Improve Scientific Utility Liyun Tu, Austin Talbot, Neil Gallagher | L4–5 Advanced | CC-BY | mirrored | 20 pp. | arxiv |
| Supporting Individuals with Intellectual Disabilities and Mental Illness Sherri Melrose | L1–3 Foundational | CC-BY | link only | — | libretexts |
| Suppressing Roughness of Virtual Times in Parallel Discrete-Event Simulations G. Korniss, M.A. Novotny, H. Guclu | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Surfaces in Lie sphere geometry and the stationary Davey-Stewartson hierarchy E.V. Ferapontov | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Surface Triangulation -- The Metric Approach Emil Saucan | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Surface Water and Distribution Staff | L1–3 Foundational | CC-BY | mirrored | 118 pp. | libretexts |
| SUSY localization for Coulomb branch operators in omega-deformed 3d N=4 gauge theories Takuya Okuda, Yutaka Yoshida | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Symmetric matrices and quantum codes Vladimir D. Tonchev (Michigan Technological University) | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Symmetries and General Principies in the Multiband Effective Mass Theory: A Transfer Matrix Study L. Diago-Cisneros, H. Rodriguez-Coppola, R. Perez-Alvarez | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Symmetries and transitions of bounded Turing machines Peter M. Hines | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Symmetry Breaking in Stock Demand Vasiliki Plerou, Parameswaran Gopikrishnan, H. Eugene Stanley | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Symmetry breaking in the self-consistent Kohn-Sham equations E. Prodan | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Symmetry Structure of the Elser-Sloane Quasicrystal Michael Baake, Franz G\"ahler | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Sym-NCO: Leveraging Symmetricity for Neural Combinatorial Optimization Minsu Kim, Junyoung Park, Jinkyoo Park | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Syntactic Autonomy: Why There is no Autonomy without Symbols and How Self-Organization Might Evolve Them Luis M. Rocha | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Synthesis of Adversarial DDOS Attacks Using Tabular Generative Adversarial Networks Abdelmageed Ahmed Hassan, Mohamed Sayed Hussein, Ahmed Shehata AboMoustafa | L4–5 Advanced | CC0-1.0 | mirrored | 8 pp. | arxiv |
| Synthetic dataset generation methodology for Recommender Systems using statistical sampling methods, a Multinomial Logit model, and a Fuzzy Inference System Vitor T. Camacho | L4–5 Advanced | CC-BY | mirrored | 32 pp. | arxiv |
| Systematic Performance Evaluation of Multipoint Protocols Ahmed Helmy, Sandeep Gupta, Deborah Estrin | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Systematic Testing of Multicast Routing Protocols: Analysis of Forward and Backward Search Techniques Ahmed Helmy, Deborah Estrin, Sandeep Gupta | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Tagger Evaluation Given Hierarchical Tag Sets I. Dan Melamed, Philip Resnik | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Tagging French Without Lexical Probabilities -- Combining Linguistic Knowledge And Statistical Learning Evelyne Tzoukermann (AT&T Bell Labs), Dragomir R. Radev (Columbia University), William A. Gale (AT&T Bell Labs) | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Tail inference using extreme U-statistics Jochem Oorschot, Johan Segers, Chen Zhou | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Take-home Complexity Lane A. Hemaspaandra | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Tamagawa numbers of polarized algebraic varieties Victor V. Batyrev, Yu. Tschinkel | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Taming neural networks with TUSLA: Non-convex learning via adaptive stochastic gradient Langevin algorithms Attila Lovas, Iosif Lytras, Mikl\'os R\'asonyi | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Task Frames Burkhard D. Steinmacher-Burow | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Taxes in a simple wealth distribution model by inelastically scattering particles Sebastian D. Guala | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Taylor-Lagrange Neural Ordinary Differential Equations: Toward Fast Training and Evaluation of Neural ODEs Franck Djeumou, Cyrus Neary, Eric Goubault | L4–5 Advanced | CC0-1.0 | mirrored | 13 pp. | arxiv |
| Technical Sketching Justin Lemke | L1–3 Foundational | CC-BY | mirrored | 109 pp. | libretexts |
| Temiar Reduplication in One-Level Prosodic Morphology Markus Walther (University of Marburg) | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Temporal Events Detector for Pregnancy Care (TED-PC): A Rule-based Algorithm to Infer Gestational Age and Delivery Date from Electronic Health Records of Pregnant Women with and without COVID-19 Tianchu Lyu, Chen Liang, Jihong Liu | L4–5 Advanced | CC-BY-NC-ND | mirrored | 47 pp. | arxiv |
| Temporal evolution of the "thermal" and "superthermal" income classes in the USA during 1983-2001 A. Christian Silva, Victor M. Yakovenko | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Temporal Expressions in Japanese-to-English Machine Translation Francis Bond, Kentaro Ogura, Hajime Uchino | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Temporal-lobe Epilepsy: Harmonic and Anharmonic Periodicity in Microeletrode Voltage Francois A. Marshall | L4–5 Advanced | CC-BY-NC-ND | mirrored | 7 pp. | arxiv |
| Temporal-Logic-Based Reward Shaping for Continuing Reinforcement Learning Tasks Yuqian Jiang, Sudarshanan Bharadwaj, Bo Wu | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| TensorFHE: Achieving Practical Computation on Encrypted Data Using GPGPU Shengyu Fan, Zhiwei Wang, Weizhi Xu | L4–5 Advanced | CC-BY-NC-ND | mirrored | 13 pp. | arxiv |
| Termination Proofs for Logic Programs with Tabling Sofie Verbaeten, Danny De Schreye, Konstantinos Sagonas | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Territorial differences in the spread of COVID-19 in European regions and US counties Fabrizio Natale, Stefano Maria Iacus, Alessandra Conte | L4–5 Advanced | CC-BY | mirrored | 13 pp. | arxiv |
| Testing exponentiality using extropy of upper record values Santosh Kumar Chaudhary, Nitin Gupta | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |