Results 81 to 90 of about 3,130,595 (306)

An approach of extrapolation methods for the solution of nonlinear Volterra–Fredholm integral equations of the second kind [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization
This study presents the process of using extrapolation methods to solve the nonlinear Volterra–Fredholm integral equations of the second kind. To do this, by approximating the integral terms contained in equations by a quadrature rule, the nonlinear ...
H. Safdari   +2 more
doaj   +1 more source

Solving Bigeometric Volterra Integral Equations by Using Successive Approximations Method

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2021
In this study, the successive approximations method has been applied to investigate the solution for the linear bigeometric Volterra integral equations of the second kind in the sense of bigeometric calculus. The conditions to be taken into consideration
Nihan Güngör
doaj   +1 more source

Reductions of the Volterra and Toda chains

open access: yes, 2000
The Volterra and Toda chains equations are considered.
A. K. Svinin   +10 more
core   +2 more sources

Nonlinear Volterra Integrodifferential Equations

open access: yesJournal of Mathematical Analysis and Applications, 1994
This is a continuation of the authors' earlier paper [J. Math. Anal. Appl. 139, No. 1, 78-109 (1989; Zbl 0681.45010)]. Consider the semilinear Volterra integro-differential equation \[ u'(t) + Au(t) = \int^ t_ 0 a(t,s)g \bigl( s,u(s) \bigr) ds + f \bigl( t,u(t) \bigr), \quad t > 0, \] with \(u(0) = u_ 0\), where \(-A\) generates an analytic semigroup ...
Melvin L Heard, S.M. Rankin
openaire   +3 more sources

Interplay of trophic relaxation and directional selection shapes eco‐evolutionary responses to selective harvest in predator–prey systems

open access: yesOikos, EarlyView.
Fisheries‐induced evolution (FIE) describes the evolutionary changes in life‐history traits exhibited by target species in response to selective fishing pressures. Current studies predominantly focus on single‐species contexts, often assuming stationary natural selection and neglecting the impact of interacting species.
Yangke Shang   +2 more
wiley   +1 more source

On the Complex Inversion Formula and Admissibility for a Class of Volterra Systems

open access: yesInternational Journal of Differential Equations, 2014
This paper studies Volterra integral evolution equations of convolution type from the point of view of complex inversion formula and the admissibility in the Salamon-Weiss sens.
Ahmed Fadili, Hamid Bounit
doaj   +1 more source

Stochastic Volterra equations driven by cylindrical Wiener process

open access: yes, 2007
In this paper, stochastic Volterra equations driven by cylindrical Wiener process in Hilbert space are investigated. Sufficient conditions for existence of strong solutions are given.
Karczewska, Anna, Lizama, Carlos
core   +2 more sources

A Solution for Volterra Fractional Integral Equations by Hybrid Contractions

open access: yesMathematics, 2019
In this manuscript, we propose a solution for Volterra type fractional integral equations by using a hybrid type contraction that unifies both nonlinear and linear type inequalities in the context of metric spaces.
Alqahtani, Aydi, Karapinar, Rakočević
semanticscholar   +1 more source

Friends or foes? Polyploidy and competition in a grassland geophyte

open access: yesOikos, EarlyView.
Previous studies have suggested polyploids may possess a competitive advantage over diploids, due to their larger size, increased vigour or ability to better respond to abiotic stress. However, few studies have tested the effect of polyploidy on competitive ability directly, and only relatively recently has this oversight begun to be addressed. Here we
Damian Vaz de Sousa   +3 more
wiley   +1 more source

Numerical Solutions of ODEs using Volterra Series [PDF]

open access: yes, 2006
We propose a numerical approach for solving systems of nonautonomous ordinary di®erential equations under suitable assumptions. This approach is based on expansion of the solutions by Volterra series and allows to estimate the accuracy of the ...
Kirov, Nikolay, Krastanov, Michail
core  

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