Results 71 to 80 of about 577,075 (200)

A Machine‐Learning Surrogate for Differentiable Phase Equilibrium Modeling of Mantle Rocks on a Planetary Scale

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Modeling processes within Earth's and other planetary bodies' mantle requires constraints from phase equilibrium to infer how changes in phase abundance and composition affect physical properties and geochemical processes. When applying such thermodynamic models on a planetary scale, performance becomes especially crucial.
Philip Hartmeier, Pierre Lanari
wiley   +1 more source

A study of fractional integro-differential equations via Hilfer-Hadamard fractional derivative [PDF]

General Mathematics, 2019
Abstract In this paper, we investigate the existence of solution of integro-differential equations (IDEs) with Hilfer-Hadamard fractional derivative. The main results are obtained by using Schaefer’s fixed point theorem. Some Ulam stability results are presented.
D. Vivek, K. Kanagarajan, E. M. Elsayed
openaire   +1 more source

Existence and Monotone Iterative Approximation of Solutions for Neutral Differential Equations with Generalized Fractional Derivatives

Journal of Mathematics, 2022
We study the existence and monotone iterative approximation of mild solutions of fractional-order neutral differential equations involving a generalized fractional derivative of order ...
Dussadee Somjaiwang, Parinya Sa Ngiamsunthorn   +1 more
doaj   +1 more source

Spatiotemporal Variability of Water Transit Time Distribution Across an Alpine Stream Network

Water Resources Research, Volume 62, Issue 10, October 2026.
Abstract Water transit time (TT), the time elapsed from its entrance into a catchment and its exit through a stream section, is a useful indicator of catchment transport dynamics. Its distribution (TTD) is typically estimated at a single cross section where tracer data are available.
G. Grandi, P. Benettin, N. Durighetto, M. Peschiutta, M. Masiol, B. Stenni, G. Botter, E. Bertuzzo   +7 more
wiley   +1 more source

The general Caputo–Katugampola fractional derivative and numerical approach for solving the fractional differential equations

Alexandria Engineering Journal
In this manuscript, we present the general fractional derivative (FD) along with its fractional integral (FI), specifically the ψ-Caputo–Katugampola fractional derivative (ψ-CKFD).
Lakhlifa Sadek, Sahar Ahmed ldris, Fahd Jarad   +2 more
doaj   +1 more source

Panel Sequential Group Estimation of Interactive Effects Models

Oxford Bulletin of Economics and Statistics, Volume 88, Issue 5, Page 1248-1266, October 2026.
ABSTRACTThis paper proposes a novel procedure to identify latent groups in the slopes of panel data models with interactive effects. The method is straightforward to apply and relies only on closed‐form estimators when evaluating the objective function. This achieves substantial computational gains compared to alternative non‐linear methods and enables
Ignace De Vos, Joakim Westerlund
wiley   +1 more source

Hadamard functional fractional integrals and derivatives and fractional differential equations

Filomat
This paper introduces a general type of new version of Hadamard fractional integrals and derivatives with respect to another function and studies some of their properties. Further, we prove the existence results for fractional differential equations with this Hadamard type fractional derivative.
K. Balachandran, M. Matar, N. Annapoorani, D. Prabu   +3 more
openaire   +1 more source

New study on Caputo-Hadamard type fractional Neutral Integro-Differential equations [PDF]

Mathematics and Computational Sciences
In this work, we focus on the analysis of fractional-order neutral integro-differential equations using the Caputo-Hadamard fractional derivative. We employed the topological degree method (TDM) to derive results and solutions for these equations.
Emimal Navajothi, Selvi Sellappan
doaj   +1 more source

Stochastic Diffusion Driven by Internal and External Brownian Motions

Studies in Applied Mathematics, Volume 157, Issue 4, October 2026.
ABSTRACT The purpose of this paper is to introduce a stochastic version of Fokas' unified transform formula for evolution PDEs on domains with boundary. The unified transform method, also known as Fokas method, was originally developed for deterministic initial‐boundary value problems and has, so far, been used primarily in deterministic settings.
Türker Özsarı
wiley   +1 more source

Computing Hadamard type operators of variable fractional order

We consider Hadamard fractional derivatives and integrals of variable fractional order. A new type of fractional operator, which we call the Hadamard-Marchaud fractional derivative, is also considered.
Torres, D. F. M., Almeida, R.
core   +1 more source