Results 21 to 30 of about 223,771 (312)

Mixed-type functional differential equations: A numerical approach [PDF]

open access: yes, 2007
This is a PDF version of a preprint submitted to Elsevier. The definitive version was published in Journal of Computational and Applied Mathematics and is available at www.elsevier.comThis preprint discusses mixed-type functional ...
Ford, Neville J., Lumb, Patricia M.
core   +1 more source

On oscillation of solutions of differential equations with distributed delay

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
We obtain sufficient conditions for oscillation of solutions to a linear differential equation with distributed delay. We construct examples showing that constants in the conditions are unimprovable.
Vera Malygina, Tatyana Sabatulina
doaj   +1 more source

A Functional Equation with Biadditive Functions

open access: yesAnnales Mathematicae Silesianae, 2022
Abstract Let S , H , X be groups. For two given biadditive functions A : S 2 →
openaire   +5 more sources

On positiveness of the fundamental solution for a linear autonomous differential equation with distributed delay

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2014
We present necessary and sufficient conditions for the nonoscillation of the fundamental solutions to a linear autonomous differential equation with distributed delay. The conditions are proposed in both the analytic and geometric forms.
Tatyana Sabatulina, Vera Malygina
doaj   +1 more source

On a “square” functional equation [PDF]

open access: yesPacific Journal of Mathematics, 1974
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

On Cauchy’s functional equation [PDF]

open access: yesProceedings of the American Mathematical Society, 1965
for real-valued functions of a real variable. P. Erdos [2] asked, after learning about a preliminary result of S. Hartman [3], whether one obtains all functions satisfying (C) for almost all pairs (x, y) by simply redefining the functions satisfying (C) for all (x, y) in an arbitrary manner on sets of measure zero.
openaire   +2 more sources

Volterra integral equations and fractional calculus: Do neighbouring solutions intersect? [PDF]

open access: yes, 2012
This is the author's PDF version of an article published in Journal of Integral Equations and Applications. The definitive version is available at rmmc.asu.edu/jie/jie.html.This journal article considers the question of whether or not the solutions to ...
Diethelm, Kai, Ford, Neville J.
core   +1 more source

About a Problem for Loaded Parabolic-Hyperbolic Type Equation with Fractional Derivatives

open access: yesInternational Journal of Differential Equations, 2016
An existence and uniqueness of solution of local boundary value problem with discontinuous matching condition for the loaded parabolic-hyperbolic equation involving the Caputo fractional derivative and Riemann-Liouville integrals have been investigated ...
Kishin B. Sadarangani   +1 more
doaj   +1 more source

Non-symmetry and symmetry of syzygies of a system of Cauchy functional equations with a homomorphism

open access: yesMathematics Open, 2022
Two entirely different Cauchy functional equations have been investigated in the literature with a couple of unknown operators f and g mapping a unitary ring X into a domain of integrity Y satisfying the elimination law and keeping the operations of ...
Dongwen Zhang   +3 more
doaj   +1 more source

Professor Dan Petrovanu – Mathematician and Man of Culture – Seen through the Eyes of a Former Student [PDF]

open access: yesMemoirs of the Scientific Sections of the Romanian Academy, 2023
A discrete recall, 35 years after his too early passing away, on the complex personality of the reputed mathematician and eminescologist, Dan Petrovanu, professor at the Faculty of Mathematics, “Alexandru Ioan Cuza” University of Iași, seen through the ...
Theodor Havârneanu
doaj  

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