| Poisson convergence in the restricted $k$-partioning problem Anton Bovier (WIAS-Berlin, TU-Berlin), Irina Kurkova (U Paris 6) | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Poisson harmonic forms, Kostant harmonic forms, and the $S^1$-equivariant cohomology of $K/T$ Sam Evens, Jiang-Hua Lu | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Poisson limit theorems for the Robinson-Schensted correspondence and for the multi-line Hammersley process Miko{\l}aj Marciniak, {\L}ukasz Ma\'slanka, Piotr \'Sniady | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Poisson structures and birational morphisms associated with bundles on elliptic curves Alexander Polishchuk | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Police Systems, Practices, and Ethical Considerations Lisa C. Bowman-Bowen & Jamie O'Reilly | L1–3 Foundational | CC-BY-NC-SA | mirrored | 192 pp. | libretexts |
| Policy gradient learning methods for stochastic control with exit time and applications to share repurchase pricing Mohamed Hamdouche, Pierre Henry-Labordere, Huyen Pham | L4–5 Advanced | CC0-1.0 | mirrored | 19 pp. | arxiv |
| Policy Mirror Descent for Regularized Reinforcement Learning: A Generalized Framework with Linear Convergence Wenhao Zhan, Shicong Cen, Baihe Huang | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Policy Optimization to Learn Adaptive Motion Primitives in Path Planning with Dynamic Obstacles Brian Angulo, Aleksandr Panov, Konstantin Yakovlev | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Polynomial representation of additive cyclic codes and new quantum codes Reza Dastbasteh, Khalil Shivji | L4–5 Advanced | CC-BY | mirrored | 17 pp. | arxiv |
| Polynomial sequences in discrete nilpotent groups of step 2 Alexandru D. Ionescu, Akos Magyar, Mariusz Mirek | L4–5 Advanced | CC0-1.0 | mirrored | 25 pp. | arxiv |
| Polynomial spline regression: Theory and Application Mithun Kumar Acharjee, Kumer Pial Das | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Polynomial-time Computation via Local Inference Relations Robert Givan, David McAllester | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Polynomial-time computing over quadratic maps I: sampling in real algebraic sets Dima Grigoriev, Dmitrii V. Pasechnik | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Ponzano-Regge model revisited II: Equivalence with Chern-Simons Laurent Freidel, David Louapre | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Population Health for Nurses | L1–2 Foundational | CC-BY-NC-SA | mirrored | 1,213 pp. | openstax |
| Portfolio analysis with mean-CVaR and mean-CVaR-skewness criteria based on mean-variance mixture models Nuerxiati Abudurexiti, Kai He, Dongdong Hu | L4–5 Advanced | CC-BY | mirrored | 27 pp. | arxiv |
| Portfolio Optimisation via the Heston Model Calibrated to Real Asset Data Jaros{\l}aw Gruszka, Janusz Szwabi\'nski | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Portfolio Optimization on Multivariate Regime Switching GARCH Model with Normal Tempered Stable Innovation Cheng Peng, Young Shin Kim, Stefan Mittnik | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Portfolio Optimization under Habit Formation Roman Naryshkin, Matt Davison | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Portfolio Optimization with Spectral Measures of Risk Acerbi Carlo, Simonetti Prospero | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Portfolio Volatility Estimation Relative to Stock Market Cross-Sectional Intrinsic Entropy Claudiu Vinte, Marcel Ausloos | L4–5 Advanced | CC-BY-NC-ND | mirrored | 24 pp. | arxiv |
| Positively curved 7-dimensional manifolds Fabio Podesta, Luigi Verdiani | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Positive recurrence of a solution of an SDE with variable switching intensities Alexander Veretennikov | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Posterior Collapse and Latent Variable Non-identifiability Yixin Wang, David M. Blei, John P. Cunningham | L4–5 Advanced | CC-BY | mirrored | 19 pp. | arxiv |
| Posterior sampling with CNN-based, Plug-and-Play regularization with applications to Post-Stack Seismic Inversion Muhammad Izzatullah, Tariq Alkhalifah, Juan Romero | L4–5 Advanced | CC-BY-NC-SA | mirrored | 33 pp. | arxiv |
| Post-training Quantization for Neural Networks with Provable Guarantees Jinjie Zhang, Yixuan Zhou, Rayan Saab | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Power Control for 6G Industrial Wireless Subnetworks: A Graph Neural Network Approach Daniel Abode, Ramoni Adeogun, Gilberto Berardinelli | L4–5 Advanced | CC-BY | mirrored | 7 pp. | arxiv |
| Powering Up a Slow Charging Market: How Do Government Subsidies Affect Charging Station Supply? Zunian Luo | L4–5 Advanced | CC-BY | mirrored | 48 pp. | arxiv |
| Power Law Distributions for Stock Prices in Financial Markets Kyungsik Kim, S.-M. Yoon, K. H. Chang | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Power Law Distributions in Korean Household Incomes Kyungsik Kim, Seong-Min Yoon (Pukyong National University) | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Power law relaxation in a complex system: Omori law after a financial market crash Fabrizio Lillo, Rosario N. Mantegna | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Practical and powerful kernel-based change-point detection Hoseung Song, Hao Chen | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Practical guide to real options in discrete time Svetlana Boyarchenko, Sergei Levendorskii | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Practical Reasoning for Expressive Description Logics Ian Horrocks, Ulrike Sattler, Stephan Tobies | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Practical Reasoning for Very Expressive Description Logics Ian Horrocks, Ulrike Sattler, Stephan Tobies | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Pragmatic Estimation of Sample Size for Number of Interviews for PRO development in the 2009 FDA PRO guidance Chris Barker | L4–5 Advanced | CC-BY | mirrored | 14 pp. | arxiv |
| Prealgebra | L1–2 Foundational | CC-BY | mirrored | 1,146 pp. | openstax |
| Prealgebra 2e | L1–2 Foundational | CC-BY-NC-SA | mirrored | 1,074 pp. | openstax |
| Precálculo 2ed | L1–2 Foundational | Licence unknown | link only | — | openstax |
| Precalculus | L1–2 Foundational | CC-BY | mirrored | 1,156 pp. | openstax |
| Precalculus 2e | L1–2 Foundational | CC-BY-NC-SA | mirrored | 1,411 pp. | openstax |
| Precision Dose-finding Cancer Clinical Trials in the Setting of Broadened Eligibility Rebecca B. Silva, Bin Cheng, Richard D. Carvajal | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Predicting Cellular Responses to Novel Drug Perturbations at a Single-Cell Resolution Leon Hetzel, Simon B\"ohm, Niki Kilbertus | L4–5 Advanced | CC-BY-NC-ND | mirrored | 19 pp. | arxiv |
| Predicting the expected behavior of agents that learn about agents: the CLRI framework Jose M. Vidal, Edmund H. Durfee | L4–5 Advanced | Licence unknown | link only | — | arxiv |
| Prediction of Auto Insurance Risk Based on t-SNE Dimensionality Reduction Joseph Levitas, Konstantin Yavilberg, Oleg Korol | L4–5 Advanced | CC-BY | mirrored | 14 pp. | arxiv |
| Predictive Crypto-Asset Automated Market Making Architecture for Decentralized Finance using Deep Reinforcement Learning Tristan Lim | L4–5 Advanced | CC-BY-NC-SA | mirrored | 20 pp. | arxiv |
| Predictor Selection for Synthetic Controls Jaume Vives-i-Bastida | L4–5 Advanced | CC-BY | mirrored | 25 pp. | arxiv |
| Predictors for high frequency processes based on rational polynomials approximation of periodic exponentials Nikolai Dokuchaev | L4–5 Advanced | arxiv-nonexclusive | link only | — | arxiv |
| Preferences and Attitudes towards Debt Collection: A Cross-Generational Investigation Minou Goetze, Christina Herdt, Ricarda Conrad | L4–5 Advanced | CC-BY-NC-ND | mirrored | 27 pp. | arxiv |
| Preferences on Ranked-Choice Ballots Brian Duricy | L4–5 Advanced | CC-BY | mirrored | 10 pp. | arxiv |