Approximate Modeling for Supercritical Galton-Watson Branching Processes with Compound Poisson-Gamma Distribution

This paper demonstrates that the population-size distribution of supercritical Galton-Watson branching processes, in the asymptotic regime where the mean offspring number approaches one, can be effectively approximated by a compound Poisson-gamma distribution, a finding supported by numerical experiments and applicable to modeling cascaded multiplication processes.

Kyoya Uemura, Tomoyuki Obuch, Toshiyuki Tanaka2026-03-05🔢 math

Projective limits of probabilistic symmetries and their applications to random graph limits

This paper establishes a unified framework linking projective limits of probability measures to direct limits of their symmetry groups, demonstrating how this connection characterizes the symmetries of infinite point processes and provides a streamlined derivation of random graph limits, including graphons, graphexes, and models with bounded average degrees.

Pim van der Hoorn, Huck Stepanyants, Dmitri Krioukov2026-03-05🔬 physics

PANDAExpress: a Simpler and Faster PANDA Algorithm

This paper introduces PANDAExpress, a novel algorithm that eliminates the impractical polylogarithmic factor of the original PANDA framework by employing a new probabilistic inequality and a dynamic hyperplane partitioning scheme, thereby achieving optimal, specialized-algorithm-level runtimes for conjunctive queries and disjunctive datalog rules under arbitrary degree constraints while maintaining full generality.

Mahmoud Abo Khamis, Hung Q. Ngo, Dan Suciu2026-03-05🔢 math

A stochastic optimization algorithm for revenue maximization in a service system with balking customers

This paper proposes a stochastic gradient descent algorithm that dynamically maximizes revenue in a single-server queue with balking customers by using a novel Infinitesimal Perturbation Analysis procedure to estimate effective arrival rates based solely on observable joining behavior, thereby converging to the optimal price under mild regularity conditions.

Shreehari Anand Bodas, Harsha Honnappa, Michel Mandjes + 1 more2026-03-05🔢 math

Small ball probability of collision local time for symmetric stable processes

This paper derives the small ball probability for the collision local time of two independent symmetric α\alpha-stable processes (with parameters α1,α2(0,2]\alpha_1, \alpha_2 \in (0,2] satisfying max{α1,α2}>1\max\{\alpha_1, \alpha_2\} > 1) by analyzing the asymptotic behavior of their moment generating function via contour integration.

Minhao Hong, Qian Yu2026-03-05🔢 math

Steady State Distribution and Stability Analysis of Random Differential Equations with Uncertainties and Superpositions: Application to a Predator Prey Model

This paper presents a Monte Carlo-based computational framework to analyze the steady-state distributions and stability of random differential equations with uncertain, multi-modal parameters, demonstrating its efficacy through a Rosenzweig-MacArthur predator-prey model that reveals complex, multi-modal equilibrium behaviors.

Wolfgang Hoegele2026-03-05🔢 math

Catching jumps of metric-valued mappings with Lipschitz functions

This paper demonstrates that while a continuous map into a metric space is of bounded variation if and only if its composition with every Lipschitz function is of bounded variation, this characterization fails for discontinuous maps in spaces like 2\ell_2, infinite metric trees, and Laakso-type spaces, though it remains valid for ultrametric spaces without continuity assumptions.

Dmitriy Stolyarov, Alexander Tyulenev2026-03-05🔢 math