Results 81 to 90 of about 19,436 (230)

Ulam‐type stability of ψ− Hilfer fractional‐order integro‐differential equations with multiple variable delays

Asian Journal of Control, Volume 28, Issue 1, Page 34-45, January 2026.
Abstract We study a nonlinear ψ−$$ \psi - $$ Hilfer fractional‐order delay integro‐differential equation ( ψ−$$ \psi - $$ Hilfer FrODIDE) that incorporates N−$$ N- $$ multiple variable time delays. Utilizing the ψ−$$ \psi - $$ Hilfer fractional derivative ( ψ−$$ \psi - $$ Hilfer‐FrD), we investigate the Ulam–Hyers––Rassias (U–H–R), semi‐Ulam–Hyers ...
Cemil Tunç, Osman Tunç
wiley   +1 more source

Forward equations for option prices in semimartingale models [PDF]

We derive a forward partial integro-differential equation for prices of call options in a model where the dynamics of the underlying asset under the pricing measure is described by a -possibly discontinuous- semimartingale. This result generalizes Dupire'
Amel Bentata, Rama Cont
core   +3 more sources

Estimating scale‐dependent covariate responses using two‐dimensional diffusion derived from the stochastic partial differential equation method

Methods in Ecology and Evolution, Volume 17, Issue 1, Page 207-218, January 2026.
Abstract Species distribution models (SDMs) are widely used to standardize spatially unbalanced data, project climate impacts and identify habitat for conservation. SDMs typically estimate the impact of local environmental conditions by estimating a dome‐shaped or non‐parametric ‘environmental response function’.
Max Lindmark, Sean C. Anderson, James T. Thorson   +2 more
wiley   +1 more source

Nonperturbative quasilinear approach to the shear dynamo problem

, 2009
We study large-scale dynamo action due to turbulence in the presence of a linear shear flow. Our treatment is quasilinear and equivalent to the standard `first order smoothing approximation'. However it is non perturbative in the shear strength. We first
Sridhar, S., Subramanian, Kandaswamy
core   +1 more source

CMiNet: An R package and user‐friendly Shiny App for constructing consensus microbiome networks

Methods in Ecology and Evolution, Volume 17, Issue 1, Page 52-66, January 2026.
Abstract Microbial networks offer critical insights into community structure, ecological interactions and host–microbe dynamics. However, constructing reliable microbiome networks remains challenging due to variability among existing inference methods, limited overlap between inferred networks and the absence of a gold standard (a universally accepted ...
Rosa Aghdam, Claudia Solís‐Lemus
wiley   +1 more source

Numerical analysis of finite difference schemes arising from time-memory partial integro-differential equations [PDF]

, 2022
M. Fakharany, Mahmoud M. El-Borai, M.A. Abu Ibrahim   +2 more
openalex   +1 more source

Confronting policy myopia: Short‐term government policy and information seeking behaviors in rural Thailand

Review of Policy Research, Volume 43, Issue 1, January 2026.
Abstract Short‐term policy (STP) has attracted considerable attention as a form of time‐related public policy and is typically used to solve urgent problems. The objective of this study, which considers STP as policy myopia from an information science perspective, is to discuss the challenges encountered during the STP policymaking process and their ...
Prasongchai Setthasuravich, Hironori Kato   +1 more
wiley   +1 more source

Modification of the Differential Transform Method With Search Direction Along the Spatial Axis

International Journal of Differential Equations
This paper presents a modification of the Differential Transform Method (ModDTM) formulated so that the search direction of the solution is along a spatial axis (x). It is shown that the method is applicable to a wide spectrum of 1+1 partial differential
Helena Nayar, Patrick Azere Phiri
doaj   +1 more source

Symbolic algorithm to solve initial value problems for partial differential equations

Bulletin of Computational Applied Mathematics, 2020
In this paper, we present a new symbolic algorithm for finding the Green's function of a given initial value problem for linear partial differential equations of second order with constant coefficients.
Srinivasarao Thota, Shiv Datt Kumar
doaj  

Operational Rules for a Mixed Operator of the Erdélyi-Kober Type [PDF]

, 2004
2000 Mathematics Subject Classification: 26A33 (main), 44A40, 44A35, 33E30, 45J05, 45D05In the paper, the machinery of the Mellin integral transform is applied to deduce and prove some operational relations for a general operator of the Erdélyi-Kober ...
Luchko, Yury
core