Results 21 to 30 of about 689 (111)

Stochastic Galerkin and Monte Carlo Methods for Parabolic Problems: Numerical Performance of Variational Matrix‐Free Approximations

open access: yesProceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.
ABSTRACT Stochastic Galerkin methods offer unexplored potential for the numerical simulation of parabolic problems with random variables, in particular if they are combined with variational discretizations of the space and time variables. Due to the high dimensionality, the solution of the arising algebraic systems do not become feasible without ...
Moataz Dawor   +2 more
wiley   +1 more source

The Benjamin–Ono Equation in the Zero‐Dispersion Limit for Rational Initial Data: Generation of Dispersive Shock Waves

open access: yesCommunications on Pure and Applied Mathematics, Volume 79, Issue 9, Page 2107-2157, September 2026.
ABSTRACT The leading‐order asymptotic behavior of the solution of the Cauchy initial‐value problem for the Benjamin–Ono equation in L2(R)$L^2(\mathbb {R})$ is obtained explicitly for generic rational initial data u0$u_0$. An explicit asymptotic wave profile uZD(t,x;ε)$u^\mathrm{ZD}(t,x;\epsilon)$ is given, in terms of the branches of the multivalued ...
Elliot Blackstone   +3 more
wiley   +1 more source

Mathematical Modeling, Bifurcation Theory, and Chaos in a Dusty Plasma System with Generalized (r, q) Distributions

open access: yesAxioms
This study investigates the dynamics of dust acoustic periodic waves in a three-component, unmagnetized dusty plasma system using generalized (r⋆,q⋆) distributions.
Beenish   +2 more
doaj   +1 more source

The Two Extremal Rays of Some Hyper–Kähler Fourfolds

open access: yesMathematische Nachrichten, Volume 299, Issue 8, Page 2161-2176, August 2026.
ABSTRACT We consider projective Hyper–Kähler manifolds of dimension 4 that are deformation equivalent to Hilbert squares of K3 surfaces. In case such a manifold admits a divisorial contraction, the exceptional divisor is a conic bundle over a K3 surface. A classification of lattice embeddings implies that there are five types of such conic bundles.
Federica Galluzzi, Bert van Geemen
wiley   +1 more source

Mitigating Black Pod Disease in Cocoa Plants: An Optimal Control and Cost‐Effectiveness Analysis

open access: yesNatural Resource Modeling, Volume 39, Issue 3, August 2026.
ABSTRACT Black pod disease (BPD), caused by Phytophthora species, continues to pose a significant threat to cocoa production, particularly in tropical regions where cocoa farming is a major economic activity. This study develops a deterministic compartmental model to understand the transmission dynamics of BPD and evaluate the impact of multiple ...
Bernard Asamoah Afful
wiley   +1 more source

Impedance Spectroscopy of Bifurcation Oscillations in S‐Type Self‐Oscillatory Devices

open access: yesAdvanced Physics Research, Volume 5, Issue 7, July 2026.
Impedance spectroscopy (IS) reveals stability regimes and bifurcation dynamics in S‐type self‐oscillatory devices. By linking nonlinear control theory with frequency‐domain measurements, experimental signatures of oscillations, entrainment, and phase locking are directly identified.
Gonzalo Rivera‐Sierra   +5 more
wiley   +1 more source

Coexistence of algebraic and non-algebraic limit cycles for quintic polynomial differential systems

open access: yesElectronic Journal of Differential Equations, 2017
In the work by Gine and Grau [11], a planar differential system of degree nine admitting a nested configuration formed by an algebraic and a non-algebraic limit cycles explicitly given was presented.
Ahmed Bendjeddou, Rachid Cheurfa
doaj  

Exploring new closed-form solitary waves of a nonlinear ionic transport model arising in microtubular mass flow and their global dynamical analysis

open access: yesAin Shams Engineering Journal
This work presents a comprehensive analytical and dynamical exploration of a nonlinear ionic currents microtubule model, which governs the propagation of ionic waves and electrical impulses along the cytoskeletal microtubule network.
Mati ur Rahman   +2 more
doaj   +1 more source

Real‐Life Effectiveness After Switching to Avalglucosidase Alfa in Late‐Onset Pompe Disease Patients Worsening on Alglucosidase Alfa Therapy: A French Cohort Study

open access: yesEuropean Journal of Neurology, Volume 33, Issue 7, July 2026.
Illustrating motor function changes before the switch, during the first year, and during the second year after switching treatment. ABSTRACT Late‐onset Pompe disease (LOPD) is a progressive myopathy. Enzyme replacement therapy is effective, but long‐term outcomes vary.
Céline Tard   +55 more
wiley   +1 more source

A relative Poincaré–Birkhoff theorem

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 7, July 2026.
Abstract A. Moreno and Otto van Koert proved a generalised version of the classical Poincaré–Birkhoff theorem, for Liouville domains of any dimension. In this article, we prove a relative version for Lagrangians with Legendrian boundary. This gives interior chords of arbitrary large length, provided that the twist condition introduced by Moreno and van
Agustin Moreno, Arthur Limoge
wiley   +1 more source

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