| Jerusalem's captivities lamented, or, A plain description of Jerusalem from Joshua's time to the year 1517, both from Scripture and ancient history | L2–5 Introductory | Public domain | mirrored | 24 pp. | wikisource |
| Joint analysis and estimation of stock prices and trading volume in Barndorff-Nielsen and Shephard stochastic volatility models Friedrich Hubalek, Petra Posedel | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Joint Discriminative and Metric Embedding Learning for Person Re-Identification Sinan Sabri, Zaigham Randhawa, Gianfranco Doretto | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Joint Engagement Classification using Video Augmentation Techniques for Multi-person Human-robot Interaction Yubin Kim, Huili Chen, Sharifa Alghowinem | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Joint Entropy Search for Maximally-Informed Bayesian Optimization Carl Hvarfner, Frank Hutter, Luigi Nardi | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Joint Estimation of Extreme Spatially Aggregated Precipitation at Different Scales through Mixture Modelling Jordan Richards, Jonathan A. Tawn, Simon Brown | L4–5 Advanced | CC-BY | mirrored | 48 pp. | arxiv |
| Joint optimization of sales-mix and generation plan for a large electricity producer Paolo Falbo, Carlos Ruiz | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Justification logic and the epistemic contribution of deduction Nancy Abigail Nu\~nez Hern\'andez, Francisco Hern\'andez Quiroz | L4–5 Advanced | CC-BY-NC-ND | mirrored | 21 pp. | arxiv |
| Kahler geometry of toric varieties and extremal metrics Miguel Abreu | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| KAM Theorems for Multi-scale Torus Weichao Qian, Yixian Gao, Yong Li | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Kansas State University:Human Nutrition Brian Lindshield | L1–3 Foundational | CC-BY-NC-SA | link only | — | libretexts |
| Ke Li's lemma for quantum hypothesis testing in general von Neumann algebras Yan Pautrat, Simeng Wang | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Kernel-based off-policy estimation without overlap: Instance optimality beyond semiparametric efficiency Wenlong Mou, Peng Ding, Martin J. Wainwright | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Kernel partial least squares regression for functional nonlinear models Rou Zhong, Dongxue Wang, Jingxiao Zhang | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Kinematics of stock prices M. Serva, U.L. Fulco, M.L. Lyra | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Kinetic Economies Wan Ahmad Tajuddin Wan Abdullah, Sidiq Mohamad Khidzir (Universiti Malaya) | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Kinetic Theory of Turbulence Modeling: Smallness Parameter, Scaling and Microscopic Derivation of Smagorinsky Model Santosh Ansumali, Iliya V. Karlin, Sauro Succi | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| k-nearest neighbors prediction and classification for spatial data Mohamed-Salem Ahmed, Mamadou N'diaye, Mohammed Kadi Attouch | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Knotted toroidal sets, attractors and incompressible surfaces H\'ector Barge, J.J. S\'anchez-Gabites | L4–5 Advanced | CC-BY | mirrored | 20 pp. | arxiv |
| Knowing and acting | L2–5 Introductory | Public domain | mirrored | 32 pp. | wikisource |
| Knowledge and common knowledge in a distributed environment Joseph Y. Halpern, Yoram Moses | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Knowledge on Treelike Spaces Konstantinos Georgatos | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Knowledge Theoretic Properties of Topological Spaces Konstantinos Georgatos | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Kolmogorov's Structure Functions and Model Selection Nikolai Vereshchagin (Moscow State University), Paul Vitanyi (CWI, University of Amsterdam) | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Kullback-Leibler distance as a measure of the information filtered from multivariate data Michele Tumminello, Fabrizio Lillo, Rosario Nunzio Mantegna | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Kumaraswamy autoregressive moving average models for double bounded environmental data F\'abio Mariano Bayer, D\'ebora Missio Bayer, Guilherme Pumi | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Labor Income Risk and the Cross-Section of Expected Returns Mykola Pinchuk | L4–5 Advanced | CC-BY | mirrored | 47 pp. | arxiv |
| Labor market conditions and college graduation: evidence from Brazil Lucas Finamor | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Ladders on Fano varieties Florin Ambro | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Lagrange statistics in systems (markets) with price constraints: Analysis of property, car sales, marriage and job markets by the Boltzmann function and the Pareto distribution J. Mimkes (1), Th. Fruend (1), G. Willis (2) ((1) Physics Department | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Langevin algorithms for Markovian Neural Networks and Deep Stochastic control Pierre Bras, Gilles Pag\`es | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Langevin algorithms for very deep Neural Networks with application to image classification Pierre Bras | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Language and the Study of Language | L2–5 Introductory | Public domain | mirrored | 499 pp. | wikisource |
| Language identification of controlled systems: Modelling, control and anomaly detection J. F. Martins (EST-IPS, Setubal), J. A. Dente (IST | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Language Modelling For Task-Oriented Domains Cosmin Popovici (ICI - Bucuresti, Romania), Paolo Baggia (CSELT - Turin | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Laplace HypoPINN: Physics-Informed Neural Network for hypocenter localization and its predictive uncertainty Muhammad Izzatullah, Isa Eren Yildirim, Umair Bin Waheed | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Large-Scale 3D Printing -- Market Analysis Razan Abdelazim Idris Alzain | L4–5 Advanced | CC-BY | mirrored | 48 pp. | arxiv |
| Large sets of strongly cospectral vertices in Cayley graphs Peter Sin | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Large Subsets of $\mathbb{Z}_m^n$ without Arithmetic Progressions Christian Elsholtz, Benjamin Klahn, Gabriel F. Lipnik | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Large-width asymptotics for ReLU neural networks with $\alpha$-Stable initializations Stefano Favaro, Sandra Fortini, Stefano Peluchetti | L4–5 Advanced | CC-BY | mirrored | 29 pp. | arxiv |
| Laser Welfare: First Steps in Econodynamic Engineering G. Willis | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Lattice parameters from direct-space images at two tilts W. Qin, P. Fraundorf | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Lattice Structure and Convergence of a Game of Cards Eric Goles (Univ. de Chile), Michel Morvan (Univ. Paris 7, IUF) | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Laughter; an Essay on the Meaning of the Comic | L2–5 Introductory | Public domain | mirrored | 170 pp. | wikisource |
| Layout Procedures for Metals Marc Rose | L1–3 Foundational | CC-BY | mirrored | 44 pp. | libretexts |
| Lazy Transformation-Based Learning Ken Samuel (Department of Computer Science, University of Delaware) | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Leadership and Influencing Change in Nursing Joan Wagner Ed. | L1–3 Foundational | CC-BY | link only | — | libretexts |
| Learned Hierarchical B-frame Coding with Adaptive Feature Modulation for YUV 4:2:0 Content Mu-Jung Chen, Hong-Sheng Xie, Cheng Chien | L4–5 Advanced | CC-BY-NC-ND | mirrored | 5 pp. | arxiv |
| Learning 3D Human Pose Estimation from Dozens of Datasets using a Geometry-Aware Autoencoder to Bridge Between Skeleton Formats Istv\'an S\'ar\'andi, Alexander Hermans, Bastian Leibe | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Learning and interpreting asymmetry-labeled DAGs: a case study on COVID-19 fear Manuele Leonelli, Gherardo Varando | L4–5 Advanced | CC-BY | mirrored | 36 pp. | arxiv |