| A Fuzzy Relational Identification Algorithm and Its Application to Predict The Behaviour of a Motor Drive System P. J. Costa Branco, J. A. Dente | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Ageing and dynamical scaling in the critical Ising spin glass Malte Henkel, Michel Pleimling | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Ageing in the critical contact process: a Monte Carlo study Jose J. Ramasco, Malte Henkel, Maria Augusta Santos | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Ageing phenomena without detailed balance: the contact process Tilman Enss, Malte Henkel, Alan Picone | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| A General, Sound and Efficient Natural Language Parsing Algorithm based on Syntactic Constraints Propagation Jose F. Quesada | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| A General Treatment of Orbiting Gyroscope Precession R.J.Adler, A.S.Silbergleit | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Agent-based Integrated Assessment Models: Alternative Foundations to the Environment-Energy-Economics Nexus Karl Naumann-Woleske | L4–5 Advanced | CC-BY-SA | mirrored | 33 pp. | arxiv |
| Agent Simulation of Chain Bankruptcy Yuichi Ikeda, Yoshi Fujiwara, Wataru Souma | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Agents of Choice: Tools that Facilitate Notice and Choice about Web Site Data Practices Lorrie Faith Cranor | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| A geometric approach to the fundamental lemma for unitary groups G. Laumon, M. Rapoport | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Aggregation rates in one-dimensional stochastic systems with adhesion and gravitation Mikhail Lifshits, Zhan Shi | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| A Grammar of Japanese Ornament and Design | L2–5 Introductory | Public domain | mirrored | 103 pp. | wikisource |
| A Guide to Physical Activity (Kramer) Eydie Kramer | L1–3 Foundational | CC-BY | link only | — | libretexts |
| A Guide to the Gothic Jeanette A Laredo | L1–3 Foundational | CC-BY | link only | — | libretexts |
| A Guide to the Principles of Animal Nutrition Gita Cherian | L1–3 Foundational | CC-BY-NC | mirrored | 120 pp. | libretexts |
| A housing-demographic multi-layered nonlinear model to test regulation strategies Ramon Huerta, Fernando Corbacho, Luis F. Lago-Fernandez | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| A Hybrid Environment for Syntax-Semantic Tagging Lluis Padro | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| A Hypergraph Neural Network Framework for Learning Hyperedge-Dependent Node Embeddings Ryan Aponte, Ryan A. Rossi, Shunan Guo | L4–5 Advanced | CC-BY | mirrored | 12 pp. | arxiv |
| A Laboratory Guide to Clinical Hematology (Villatoro and To) Valentin Villatoro, Michelle To | L1–3 Foundational | CC-BY-NC | mirrored | 206 pp. | libretexts |
| A Lambda-Calculus with letrec, case, constructors and non-determinism Manfred Schmidt-Schau{\ss}, Michael Huber | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| A Learning Approach for Joint Design of Event-triggered Control and Power-Efficient Resource Allocation Atefeh Termehchi, Mehdi Rasti | L4–5 Advanced | CC0-1.0 | mirrored | 14 pp. | arxiv |
| A Learning Approach to Shallow Parsing Marcia Mu\~noz, Vasin Punyakanok, Dan Roth | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Algebra 1 | L1–2 Foundational | CC-BY-NC-SA | mirrored | 1,535 pp. | openstax |
| Algebra and Trigonometry | L1–2 Foundational | CC-BY | mirrored | 1,220 pp. | openstax |
| Algebra and Trigonometry 2e | L1–2 Foundational | CC-BY-NC-SA | mirrored | 1,467 pp. | openstax |
| Algorithmic Complexity in Minority Game Ricardo Mansilla Corona | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Algorithmic Complexity in Real Financial Markets R. Mansilla | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Algorithmic Computation of Local Cohomology Modules and the Cohomological Dimension of Algebraic Varieties Uli Walther (University of Minnesota) | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Algorithmic Writing Assistance on Jobseekers' Resumes Increases Hires Emma van Inwegen, Zanele Munyikwa, John J. Horton | L4–5 Advanced | CC-BY | mirrored | 41 pp. | arxiv |
| Algorithms for Analysing Firewall and Router Access Lists Scott Hazelhurst | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Algorithm xxx: Modified Bessel functions of imaginary order and positive argument Amparo Gil, Javier Segura, Nico M. Temme | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| A Linguistically Interpreted Corpus of German Newspaper Text Wojciech Skut, Thorsten Brants, Brigitte Krenn | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| A Linkage-based Doubly Imbalanced Graph Learning Framework for Face Clustering Huafeng Yang, Qijie Shen, Xingjian Chen | L4–5 Advanced | CC-BY | mirrored | 11 pp. | arxiv |
| All Are Welcome: An Introduction to the Hospitality Industry Christy Douglass et al. | L1–3 Foundational | CC-BY-NC | mirrored | 286 pp. | libretexts |
| All Pairs Shortest Paths using Bridging Sets and Rectangular Matrix Multiplication Uri Zwick | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| A Logic for SDSI's Linked Local Name Spaces Joseph Y. Halpern, Ron van der Meyden | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| A Look at Financial Dependencies by Means of Econophysics and Financial Economics M. Raddant, T. Di Matteo | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Alternative solutions to diluted p-spin models and XORSAT problems M. Mezard, F. Ricci-Tersenghi, R. Zecchina | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| A Mathematical Framework for Learning Probability Distributions Hongkang Yang | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| A mathematical framework for modelling order book dynamics Rama Cont, Pierre Degond, Lifan Xuan | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| A Maximum-Entropy Partial Parser for Unrestricted Text Wojciech Skut, Thorsten Brants (Computational Linguistics, Universitity of the Saarland | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| A Mechanism for Pockets of Predictability in Complex Adaptive Systems Jorgen Vitting Andersen, Didier Sornette | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| A Memory-Based Approach to Learning Shallow Natural Language Patterns Shlomo Argamon, Ido Dagan, Yuval Krymolowski | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| American Government | L1–2 Foundational | CC-BY | mirrored | 778 pp. | openstax |
| American Government 2e | L1–2 Foundational | CC-BY | mirrored | 781 pp. | openstax |
| American Government 3e | L1–2 Foundational | CC-BY | mirrored | 726 pp. | openstax |
| American Government 4e | L1–2 Foundational | CC-BY-NC-SA | mirrored | 737 pp. | openstax |
| American Literature I Anne Eidenmuller | L1–3 Foundational | CC-BY-SA | mirrored | 355 pp. | libretexts |
| American Options under Proportional Transaction Costs: Pricing, Hedging and Stopping Algorithms for Long and Short Positions Alet Roux, Tomasz Zastawniak | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| A method for command identification, using modified collision free hashing with addition & rotation iterative hash functions (part 1) Dimitrios Skraparlis | L4–5 Advanced | Licence unknown | link only | — | arxiv |