Results 41 to 50 of about 13,221 (124)

Robust estimation of a Markov chain transition matrix from multiple sample paths

Statistica Neerlandica, Volume 80, Issue 1, February 2026.
Markov chains are fundamental models for stochastic dynamics, with applications in a wide range of areas such as population dynamics, queueing systems, reinforcement learning, and Monte Carlo methods. Estimating the transition matrix and stationary distribution from observed sample paths is a core statistical challenge, particularly when multiple ...
Lasse Leskelä, Maximilien Dreveton
wiley   +1 more source

Constructing polynomial systems with many positive solutions using tropical geometry

, 2017
The number of positive solutions of a system of two polynomials in two variables defined in the field of real numbers with a total of five distinct monomials cannot exceed 15. All previously known examples have at most 5 positive solutions.
Hilany, Boulos El
core   +2 more sources

A priori estimates and large population limits for some nonsymmetric Nash systems with semimonotonicity

Communications on Pure and Applied Mathematics, Volume 79, Issue 1, Page 3-88, January 2026.
Abstract We address the problem of regularity of solutions ui(t,x1,…,xN)$u^i(t, x^1, \ldots, x^N)$ to a family of semilinear parabolic systems of N$N$ equations, which describe closed‐loop equilibria of some N$N$‐player differential games with Lagrangian having quadratic behaviour in the velocity variable, running costs fi(x)$f^i(x)$ and final costs gi(
Marco Cirant, Davide Francesco Redaelli
wiley   +1 more source

Probabilistic Degenerate Fubini Polynomials Associated with Random Variables [PDF]

Journal of Nonlinear Mathematical Physics
Let Y be a random variable such that the moment generating function of Y exists in a neighborhood of the origin. The aim of this paper is to study probabilistic versions of the degenerate Fubini polynomials and the degenerate Fubini polynomials of order ...
Rongrong Xu, Taekyun Kim, Dae San Kim, Yuankui Ma   +3 more
semanticscholar   +1 more source

Musculoskeletal Pain, Insomnia and Health‐Related Quality of Life: Associations in the Middle‐Aged General Population

European Journal of Pain, Volume 30, Issue 1, January 2026.
ABSTRACT Background Musculoskeletal (MSK) pain and insomnia are interrelated and individually linked to reduced health‐related quality of life (HRQoL). This study aimed to enlighten the association of concurrent disabling MSK pain and insomnia with HRQoL among middle‐aged individuals.
Tuukka Korpela, Jaro Karppinen, Petteri Oura, Markus Paananen, Arnold Y. L. Wong, Ilona Merikanto, Eveliina Heikkala   +6 more
wiley   +1 more source

Return Period of Nonconcurrent Climate Compound Events: A Nonparametric Bivariate Generalized Pareto Approach

Environmetrics, Volume 37, Issue 1, January 2026.
ABSTRACT Compound events (CEs), commonly defined as the “combination of multiple drivers and/or hazards that contributes to societal or environmental risk”, often result in amplified impacts compared to individual hazards. In order to estimate the return period of bivariate CEs, a novel nonparametric approach employing bivariate Generalized Pareto ...
Grégoire Jacquemin, Denis Allard, Xavier Freulon, Mathieu Vrac   +3 more
wiley   +1 more source

Poles of Archimedean zeta functions for analytic mappings

, 2011
In this paper, we give a description of the possible poles of the local zeta function attached to a complex or real analytic mapping in terms of a log-principalization of an ideal associated to the mapping.
Leon-Cardenal, E., Veys, Willem, Zuniga-Galindo, W. A.   +2 more
core   +1 more source

Examining the Relationship Between Adverse Childhood Experiences and ICD‐11 Personality Disorder in a Community Mental Health Sample

Personality and Mental Health, Volume 20, Issue 1, February 2026.
ABSTRACT Adverse childhood experiences (ACEs) are a well‐established risk factor for a wide range of mental health conditions, including personality disorder (PD). Yet, few studies have explored the relationship between ACEs and dimensional models of PD using the ICD‐11 framework.
Rachael C. Martin, Martin Sellbom
wiley   +1 more source

Simulation‐Based Bayesian Predictive Probability of Success for Interim Monitoring of Clinical Trials With Competing Event Data: Two Case Studies

Pharmaceutical Statistics, Volume 25, Issue 1, January/February 2026.
ABSTRACT Bayesian predictive probabilities of success (PPoS) use interim trial data to calculate the probability of trial success. These quantities can be used to optimise trial size or to stop for futility. In this paper, we describe a simulation‐based approach to compute the PPoS for clinical trials with competing event data, for which no specific ...
Chiara Micoli, Alessio Crippa, Jason T. Connor, I‐SPY COVID Consortium, Martin Eklund, Andrea Discacciati   +5 more
wiley   +1 more source

Module structure of Weyl algebras

Journal of the London Mathematical Society, Volume 113, Issue 1, January 2026.
Abstract The seminal paper (Stafford, J. Lond. Math. Soc. (2) 18 (1978), no. 3, 429–442) was a major step forward in our understanding of Weyl algebras. Beginning with Serre's Theorem on free summands of projective modules and Bass' Stable Range Theorem in commutative algebra, we attempt to trace the origins of this work and explain how it led to ...
Gwyn Bellamy
wiley   +1 more source