Results 51 to 60 of about 32,351,759 (213)
Boundary Value Problem for a Second-Order Difference Equation with Resonance
Complexity, 2020 In this paper, we study the existence and multiplicity of nontrivial solutions of a second-order discrete boundary value problem with resonance and sublinear or superlinear nonlinearity.
Zhenguo Wang, Zhan Zhou
doaj +1 more source
Journal of Time Series Analysis, EarlyView.ABSTRACT We consider the problem of sequential (online) estimation of a single change point in a piecewise linear regression model under a Gaussian setup. We demonstrate that certain CUSUM‐type statistics attain the minimax optimal rates for localizing the change point.
Annika Hüselitz, Housen Li, Axel Munk
wiley +1 more source
Remarks on least energy solutions for quasilinear elliptic problems in $R^N$
Electronic Journal of Differential Equations, 2003 In this work we establish some properties of the solutions to the quasilinear second-order problem $$ -Delta_p w=g(w)quad hbox{in } mathbb{R}^N $$ where $Delta_p u=mathop{ m div}(| abla u|^{p-2} abla u)$ is the $p$-Laplacian operator and ...
Joao Marcos Do O, Everaldo S. Medeiros
doaj
Minimax Lower Bounds for Uniform Estimation of Covariate-Dependent Copula Parameters
MathematicsLocal likelihood methods are widely used to estimate calibration functions in conditional copula models. Recent work has established uniform stochastic equicontinuity and uniform convergence rates for local likelihood estimators of covariate-dependent ...
Mathias Nthiani Muia +2 more
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Testing Distributional Granger Causality With Entropic Optimal Transport
Journal of Time Series Analysis, EarlyView.ABSTRACT We develop a novel nonparametric test for Granger causality in distribution based on entropic optimal transport. Unlike classical mean‐based approaches, the proposed method directly compares the full conditional distributions of a response variable with and without the history of a candidate predictor.
Tao Wang
wiley +1 more source
Existence of nonconstant periodic solutions for p(t) $p(t)$-Laplacian Hamiltonian system
Boundary Value Problems, 2019 The purpose of this paper is to consider the existence of periodic solutions for the p(t) $p(t)$-Laplacian Hamiltonian system. Some results are obtained by using the least action principle and the minimax methods.
Yuanfang Ru, Fanglei Wang
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MedComm, Volume 7, Issue 4, April 2026.This phase II trial evaluated the efficacy and safety of niraparib combined with HX008 in metastatic breast cancer (MBC) patients with germline DNA damage response (DDR) gene mutations. This chemotherapy‐free regimen demonstrates promising efficacy and a tolerable safety profile in MBC patients with germline DDR mutations, providing a novel therapeutic
Jian Zhang +9 more
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Minimax principles for critical-point theory in applications to quasilinear boundary-value problems
Electronic Journal of Differential Equations, 2000 Using the variational method developed by the same author in [7], we establish the existence of solutions to the equation $-Delta_p u = f(x,u)$ with Dirichlet boundary conditions.
A. R. El Amrouss, M. Moussaoui
doaj
, 2013 Proposed work deals with the design of a family of stable IIR digital integrators via use of minimax and pole, zero, and constant optimization methods. First the minimax optimization method is used to design a family of second-, third-, and fourth-order ...
Madhu Jain, Maneesha Gupta, N. K. Jain
semanticscholar +1 more source
Financial Time Series Uncertainty: A Review of Probabilistic AI Applications
Journal of Economic Surveys, Volume 40, Issue 2, Page 915-953, April 2026.ABSTRACT Probabilistic machine learning models offer a distinct advantage over traditional deterministic approaches by quantifying both epistemic uncertainty (stemming from limited data or model knowledge) and aleatoric uncertainty (due to inherent randomness in the data), along with full distributional forecasts.
Sivert Eggen +4 more
wiley +1 more source