Results 31 to 40 of about 389,500 (314)

On the stability and Hopf bifurcation of the non-zero uniform endemic equilibrium of a time-delayed malaria model

open access: yesNonlinear Analysis, 2016
This article considers a time-delayed mathematical model of immune response to Plasmodium falciparum (Pf) malaria. Infected red blood cells display a wide variety of surface antigens to which the body in turn responds by mounting specific immune ...
Israel Ncube
doaj   +1 more source

Theory of characteristic modes based on potential-based integral equation [PDF]

open access: yes, 2016
The characteristic mode analysis is presented based on the potential-based integral equation, where the vector potential equation and the scalar potential are formulated separately and solved in tandem. Accordingly, the theory of the characteristic modes,
Jiang, L   +4 more
core   +1 more source

The Negative Pell's Equation in Positive Characteristic [PDF]

open access: yes, 2023
The Pell’s equation and the negative Pell’s equation are two of the most well-studied topics in number theory. While the solvability of the Pell’s equation over the integers is well known for centuries, the solvability problem of the negative Pell’s ...
Fujikawa, Shohei
core   +1 more source

A Historical Analysis of The Padovan Sequence

open access: yesInternational Journal of Trends in Mathematics Education Research, 2020
In the present text, we present some possibilities to formalize the mathematical content and a historical context, referring to a numerical sequence of linear and recurrent form, known as Sequence of Padovan or Cordonnier.
Renata Passos Machado Vieira   +2 more
doaj   +1 more source

Partial Prolongations and Characteristics of Differential Equations [PDF]

open access: yesTransactions of the American Mathematical Society, 1969
This paper studies the behavior of characteristics under partial prolongations. Partial prolongations define a natural equivalence relation between systems of partial differential equations [2], [3]. Examples are given to show that characteristics are not preserved in general.
openaire   +1 more source

A Necessary Characteristic Equation of Diffusion Processes Having Gaussian Marginals [PDF]

open access: yes, 2012
The aim of this work is to characterize one-dimensional homogeneous diffusion process, under the assumption that marginal density of the process is Gaussian.
Syeda Rabab Mudakkar
core   +1 more source

Damage Detection of Axially Loaded Beam: A Frequency-Based Method [PDF]

open access: yesCivil Engineering Infrastructures Journal, 2016
The present study utilizes an analytical method to formulate the three lowest modal frequencies of axially-loaded notched beam through both crack location and load level in a specific format that can be used in existing frequency-based crack ...
Omid Rezaifar   +1 more
doaj   +1 more source

Asymptotic Behavior and Stability in Linear Impulsive Delay Differential Equations with Periodic Coefficients

open access: yesMathematics, 2020
We study first order linear impulsive delay differential equations with periodic coefficients and constant delays. This study presents some new results on the asymptotic behavior and stability.
Ali Fuat Yeniçerioğlu   +2 more
doaj   +1 more source

Characteristic mode theory based on combined field integral equation [PDF]

open access: yes, 2015
Characteristic mode theory is usually formulated on top of the electric field integral equation. We present in this paper a combined field integral equation based characteristic mode theory which is immune to the internal resonance corruption when the ...
Dai, QI   +4 more
core   +1 more source

On decisions of Schwartz' problem for J-analytic functions with the same Jordan basis of real and imaginary parts of J-matrix

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2016
Boundary Schwartz' problem for J-analytic functions was studied within this scientific work. These functions are solutions of linear complex system of partial differential equations of the first order. It was considered, that the real and imaginary parts
Vladimir G Nikolaev
doaj   +1 more source

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