Results 31 to 40 of about 5,144,504 (199)

Well‐posedness of heat equations with nonlinearities of arbitrarily rapid growth

open access: yesProceedings of the London Mathematical Society, Volume 133, Issue 3, September 2026.
Abstract We address local‐ and global‐in‐time well‐posedness of the Cauchy problem for nonlinear heat equations without imposing growth rate restrictions on the nonlinearity a priori. Our results constitute a nontrivial expansion of the classical Lq$L^q$‐theory for nonlinearities dominated by polynomial growth and the exponential‐Orlicz space theory ...
Yohei Fujishima   +2 more
wiley   +1 more source

Robust Bernoulli Mixture Models for Credit Portfolio Risk

open access: yesMathematical Finance, Volume 36, Issue 3, Page 528-543, July 2026.
ABSTRACT This paper presents comparison results and establishes risk bounds for credit portfolios within classes of Bernoulli mixture models, assuming conditionally independent defaults that are stochastically increasing in a common risk factor. We provide simple and interpretable conditions on conditional default probabilities that imply a comparison ...
Jonathan Ansari, Eva Lütkebohmert
wiley   +1 more source

Tame majorant analyticity for the Birkhoff map of the defocusing nonlinear Schrödinger equation on the circle [PDF]

open access: yes, 2018
For the defocusing nonlinear Schrö dinger equation on the circle, we construct a Birkhoff map Φ which is tame majorant analytic in a neighborhood of the origin.
A Maspero, Maspero, A.
core   +1 more source

Disrupted habenula function in major depression [PDF]

open access: yesMolecular Psychiatry, 2016
The habenula is a small, evolutionarily conserved brain structure that plays a central role in aversive processing and is hypothesised to be hyperactive in depression, contributing to the generation of symptoms such as anhedonia. However, habenula responses during aversive processing have yet to be reported in individuals with major depressive disorder
Lawson, RP   +6 more
openaire   +4 more sources

Engagement maximization

open access: yesTheoretical Economics, Volume 21, Issue 3, Page 849-887, July 2026.
We investigate the management of information provision to maximize user engagement. A principal sequentially reveals signals to an agent who has a limited amount of information processing capacity and can choose to exit at any time. We identify a “dilution” strategy—sending rare but highly informative signals—that maximizes user engagement.
Benjamin Hébert, Weijie Zhong
wiley   +1 more source

A generalization of the Beurling--Malliavin Majorant theorem [PDF]

open access: yes
In this article we prove a generalization of the Beurling--Malliavin Majorant Theorem. In more detail, we establish a new sufficient condition for a function to be a Beurling--Malliavin Majorant.
Vasilyev, Ioann
core   +1 more source

A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 40, Issue 6, Page 1196-1220, June 2026.
Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg   +5 more
wiley   +1 more source

Efficient computation of the cdf of the maximum distance between Brownian bridge and its concave majorant

open access: yes, 2012
In this paper, we describe two computational methods for calculating the cumulative distribution function and the upper quantiles of the maximal difference between a Brownian bridge and its concave majorant.
Filali, Karim   +3 more
core   +3 more sources

Local convergence of Newton's method using Kantorovich convex majorants

open access: yesJournal of Numerical Analysis and Approximation Theory, 2010
We are concerned with the problem of approximating a solution of an operator equation using Newton's method. Recently in the elegant work by Ferreira and Svaiter [6] a semilocal convergence analysis was provided which makes clear the relationship of the
Ioannis K. Argyros
doaj   +2 more sources

Simpler proof for nonlinearity of majority function [PDF]

open access: yesDiscrete Applied Mathematics, 2021
10 pages, LaTeX; better title and abstract; reference added; revised ...
openaire   +3 more sources

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