Results 91 to 100 of about 516,450 (251)

Sequential Outlier Detection in Nonstationary Time Series

Journal of Time Series Analysis, EarlyView.
ABSTRACT A novel method for sequential outlier detection in nonstationary time series is proposed. The method tests the null hypothesis of “no outlier” at each time point, addressing the multiple testing problem by bounding the error probability of successive tests, using extreme‐value theory. The asymptotic properties of the test statistic are studied
Florian Heinrichs, Patrick Bastian, Holger Dette   +2 more
wiley   +1 more source

On a two-parameter extension of the lattice KdV system associated with an elliptic curve

, 2002
A general structure is developed from which a system of integrable partial difference equations is derived generalising the lattice KdV equation. The construction is based on an infinite matrix scheme with as key ingredient a (formal) elliptic Cauchy ...
Adler V E, Adler V E, Bordag L A, Calogero F, Capel H W, Hirota R, Krichever I M, Nakamura A, Nakamura A, Nijhoff F W, Nijhoff F W, Nijhoff F W, Nijhoff F W, Nijhoff F W, Okamoto K, Papageorgiou V G, Quispel G R W, Quispel G R W, Svinolupov S I   +18 more
core   +2 more sources

Some results in Cauchy-Stieltjes kernel families

Filomat, 2022
In this paper we present two different results in the theory of Cauchy-Stieltjes Kernel (CSK) families. We firstly provide the construction of free Sheffer systems with the theory of CSK families. We associate a free additive convolution semigroup of probability measures to any free Sheffer systems and we prove that this is the only one ...
openaire   +1 more source

Empirical‐Process Limit Theory and Filter Approximation Bounds for Score‐Driven Time Series Models

Journal of Time Series Analysis, EarlyView.
ABSTRACT This article examines the filtering and approximation‐theoretic properties of score‐driven time series models. Under specific Lipschitz‐type and tail conditions, new results are derived, leading to maximal and deviation inequalities for the filtering approximation error using empirical process theory.
Enzo D'Innocenzo
wiley   +1 more source

Gradient Structures Associated with a Polynomial Differential Equation

Mathematics, 2020
In this paper, by using the characteristic system method, the kernel of a polynomial differential equation involving a derivation in R n is described by solving the Cauchy Problem for the corresponding first order system of PDEs.
Savin Treanţă
doaj   +1 more source

Parents Develop Long‐Term Disgust Habituation, but Only After Beginning to Wean Their Children

Scandinavian Journal of Psychology, EarlyView.
ABSTRACT Disgust helps humans avoid potentially pathogenic substances such as bodily effluvia. This reduces illness risks and is difficult to overcome with cognitive strategies or through short‐term habituation (minutes to hours). Whether long‐term habituation (months to years) exists is an unsolved question.
Yifan Huang, Ivo E. Dalmaijer‐Denning, Joris A. Dalmaijer‐Denning, Thomas Armstrong, Edwin S. Dalmaijer   +4 more
wiley   +1 more source

A Hamiltonian Approach to the Heat Kernel of a SubLaplacian on S(2n+1)

, 2013
The heat kernel for the Cauchy-Riemann subLaplacian on S(2n+1) is derived in a manner which is completely analogous to the classical derivation of elliptic heat kernels.
Greiner, Peter C.
core   +1 more source

Degree theory for 4‐dimensional asymptotically conical gradient expanding solitons

Communications on Pure and Applied Mathematics, Volume 79, Issue 5, Page 1151-1298, May 2026.
Abstract We develop a new degree theory for 4‐dimensional, asymptotically conical gradient expanding solitons. Our theory implies the existence of gradient expanding solitons that are asymptotic to any given cone over S3$S^3$ with non‐negative scalar curvature. We also obtain a similar existence result for cones whose link is diffeomorphic to S3/Γ$S^3/\
Richard H. Bamler, Eric Chen
wiley   +1 more source

Study of impulsive problems under Mittag-Leffler power law

Heliyon, 2020
This article is fundamentally concerned with deriving the solution formula, existence, and uniqueness of solutions of two types of Cauchy problems for impulsive fractional differential equations involving Atangana-Baleanu-Caputo (ABC) fractional ...
Mohammed S. Abdo, Thabet Abdeljawad, Kamal Shah, Fahd Jarad   +3 more
doaj   +1 more source

On the Mean‐Field Limit of Consensus‐Based Methods

Mathematical Methods in the Applied Sciences, Volume 49, Issue 5, Page 4214-4240, 30 March 2026.
ABSTRACT Consensus‐based optimization (CBO) employs a swarm of particles evolving as a system of stochastic differential equations (SDEs). Recently, it has been adapted to yield a derivative free sampling method referred to as consensus‐based sampling (CBS). In this paper, we investigate the “mean‐field limit” of a class of consensus methods, including
Marvin Koß, Simon Weissmann, Jakob Zech
wiley   +1 more source