Results 51 to 60 of about 2,133 (160)

Uncovering Hidden Patterns: Approximate Resurgent Resummation from Truncated Series

open access: yesMathematics
We analyze truncated series generated as divergent formal solutions of non-linear ordinary differential equations. Motivating the study is a specific non-linear, first-order differential equation, which is the basis of the resurgent formulation of ...
Alessio Maiezza, Juan Carlos Vasquez
doaj   +1 more source

p,q-Growth of Meromorphic Functions and the Newton-Padé Approximant

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2019
In this paper, we have considered the generalized growth (p,q-order and p,q-type) in terms of coefficient of the development pnn given in the (n, n)-th Newton-Padé approximant of meromorphic function.
Mohammed Harfaoui   +2 more
doaj   +1 more source

A family of difference schemes for fourth order parabolic partial differential equations [PDF]

open access: yes, 1983
A family of methods is developed for the numerical solution of fourth order parabolic partial differential equations in one- and two-space variables.
Khaliq, AQM, Twizell, EH
core  

Inhomogeneous broadening in the time domain

open access: yesNanophotonics, Volume 14, Issue 23, Page 4177-4196, 02 November 2025.
Abstract Forty‐five years after the initial attempts – first by Efimov–Khitrov in 1979, then by Brendel–Bormann in 1992 – we present a comprehensive, causal, and physically consistent framework for modeling the dielectric function with inhomogeneous (non‐Lorentzian) broadening, where scattering becomes frequency‐ or time‐dependent.
Ludmila J. Prokopeva   +1 more
wiley   +1 more source

Joint Constraints on the Hubble Constant, Spatial Curvature, and Sound Horizon from the Late-time Universe with Cosmography

open access: yesThe Astrophysical Journal, 2023
In this paper, using the latest Pantheon+ sample of Type Ia supernovae, baryon acoustic oscillation measurements, and observational Hubble data, we carry out a joint constraint on the Hubble constant H _0 , the spatial curvature Ω _K , and the sound ...
Kaituo Zhang   +4 more
doaj   +1 more source

Multiderivative methods for nonlinear second order boundary value problems [PDF]

open access: yes, 1985
Second, fourth and sixth order methods are developed and analysed for the numerical solution of non-linear second order boundary value problems. The methods arise from a two-step recurrence relation involving exponential terms, these being replaced by ...
Tirmizi, S I A, Twizell, E H
core  

On the Density–Density Correlations of the Non‐Interacting Finite Temperature Electron Gas

open access: yesContributions to Plasma Physics, Volume 65, Issue 8-9, October 2025.
ABSTRACT The density–density correlations of the non‐interacting finite temperature electron gas are discussed in detail. Starting from the ideal linear density response function and utilizing general relations from linear response theory, known and novel expressions are derived for the pair correlation function, static structure factor, dynamic ...
Panagiotis Tolias   +2 more
wiley   +1 more source

Study of thermal variation in a longitudinal exponential porous fin wetted with TiO2−SiO2/ hexanol hybrid nanofluid using hybrid residual power series method

open access: yesCase Studies in Thermal Engineering, 2023
This study aims to inspect the steady state thermal distribution and heat transfer within a longitudinal porous fin of exponential profile wetted with hybrid nanoliquid.
Amal Abdulrahman   +7 more
doaj   +1 more source

Rational approximation for solving an implicitly given Colebrook flow friction equation [PDF]

open access: yes, 2019
The empirical logarithmic Colebrook equation for hydraulic resistance in pipes implicitly considers the unknown flow friction factor. Its explicit approximations, used to avoid iterative computations, should be accurate but also computationally efficient.
Brkić, Dejan, Praks, Pavel
core   +5 more sources

A consistent coupling of two‐moment microphysics and bulk ice optical properties, and its impact on radiation in a regional weather model

open access: yesQuarterly Journal of the Royal Meteorological Society, Volume 151, Issue 772, October 2025 Part A.
This study presents a novel, consistent coupling of two‐moment microphysics (i.e., ice mass mixing ratio and number) with bulk ice optical properties, providing improved accuracy in radiative transfer simulations. The parametrisations, based on the mass‐equivalent spherical radius, avoid uncertainties associated with the effective radius by directly ...
Anthony J. Baran   +4 more
wiley   +1 more source

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