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227 results for “Existence”
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Research ArticleOpen accessEvery word in the titleExistence of a Total Order in Every SetAbdelmadjid BoudaoudProblem statement: The axiom of choice, guarantees that all set could be well-ordered, in particular linearly ordered. But the proof in this case was not effective, that was to say, non constructive. It was natural to ask if there was mathematics in which we could given a more constructive proof. Approach: We work in the Nelson’s IST which was an … …Journal of Mathematics and Statistics, Vol. 8, Issue 2 · 16 Mar 2012 · 7,310 accessesView PDFCite
Literature ReviewOpen accessIn the keywordsAdult Patients with Aphallia: Were they Fertile?Eni Maria Sisca et al.Adult male genotype and phenotype with aphallia are men born without a penis. The effectiveness of male sex assignment or female sex reassignment as a treatment for aphallia has been debated. The study's goal was to address the gonadal existence and supporting investigation related to the reproductive health care of reported cases of aphallia patients such as karyotyping, physical examination, … …OnLine Journal of Biological Sciences, Vol. 22, Issue 2 · 25 May 2022 · 6,304 accessesView PDFCite
Research ArticleOpen accessIn the keywordsDynamics and Stability of q-Fractional Order Pantograph Equations With Nonlocal ConditionVivek Devaraj, Kuppusamy Kanagarajan, Seenith SivasundaramThis paper deals with some existence and Ulam-Hyers-q-Mittag-Leffler stability results for q-fractional order pantograph equation. An application is made of a Darbo's fixed point theorem for the existence of solutions. …Journal of Mathematics and Statistics, Vol. 14, Issue 1 · 10 Feb 2018 · 7,421 accessesView PDFCite
Research ArticleOpen accessIn the keywordsGeneralization of (0, 4) Lacunary Interpolation by Quantic SplineJwamer Karwan Hama Faraj, Ridha G. KaremProblem statement: Spline functions are the best tool of polynomials used as the basic means of approximation theory in nearly all areas of numerical analysis. Also in the problem of interpolation by g-spline construction of spline, existences, uniqueness and error bounds needed. Approach: In this study, we generalized (0,4) lacunary interpolation by quanta spline function. Results: The results obtained, the … …Journal of Mathematics and Statistics, Vol. 6, Issue 1 · 31 Mar 2010 · 7,310 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAsymptotic Behavior for Solution of Reaction-Diffusion SystemsM. Yahi, K. SaoudiThe existence, uniqueness, and asymptotic behavior of the solution of a balanced two-component reaction-diffusion system have been investigated. It was shown that a global and unique solution existed and its second component can be estimated using the Lyapunov Functional. It was, also, demonstrated that each component of the solution converged, at infinity, to a constant which can be found in … …Journal of Mathematics and Statistics, Vol. 3, Issue 3 · 30 Sep 2007 · 6,845 accessesView PDFCite
Research ArticleOpen accessIn the keywordsNumerical Solution For Frank-Kamenetskii And Activation Energy Parameters in Reactive-Diffusive Equation with Variable One-Exponential FactorO. K. Koriko, A. J. OmowayeIn this study, we considered a steady state, exothermic chemical reaction, taking the diffusion of the reactant into account and assuming an Arrhenius temperature dependence with variable pre-exponent factor. Numerical solution is constructed for the governing nonlinear boundary value problem using finite difference scheme .The effect of Frank-Kamenetskii, activation energy parameter and pre-exponent factor on the temperature were also examined, … …Journal of Mathematics and Statistics, Vol. 3, Issue 4 · 31 Dec 2007 · 6,920 accessesView PDFCite
Research ArticleOpen accessIn the abstractDesign and Evaluation of a Technology/ICT Diffusion Method for Banks- Enterprise Architecture PerspectiveEhab Juma AdwanIn retail banks, comparing the levels of technological diffusion of" in between country" to the "across country"" identifies the availability, gaps, and duplicative levels of technologies which are critical for potential investments in the latest competitive technologies. To avoid technology disparities in the diffusion levels, the comparison has to apply rigorous theoretically well founded diffusion models and mathematically proven methods. … …Journal of Computer Science, Vol. 21, Issue 6 · 28 Jun 2025 · 3,327 accessesView PDFCite
Research ArticleOpen accessIn the abstractFactors Associated with Death in Patients COVID-19 at the Epidemic Treatment Center of the Fann National University Hospital, DakarViviane Marie Pierre Cisse, Khardiata Diallo Mbaye, Ndèye Maguette Fall et al.The aim of this study was to identify the factors associated with death in patients monitored for COVID-19 at the Epidemic Treatment Center (ETC) of the Fann National University Hospital (FNUH). This was a cross-sectional, retrospective, descriptive, and analytical study of patients hospitalized for COVID-19 during the period from 1 July 2021 to 31 March 2022. Patients aged 16 years … …American Journal of Infectious Diseases, Vol. 20, Issue 2 · 4 Nov 2024 · 4,257 accessesView PDFCite
Research ArticleOpen accessIn the abstractElliptic Weighted Problem with Indefinite Asymptotically Linear NonlinearityHanadi Zahed, Laila A. AlnaserThe objective of this paper is the study the following nonlinear elliptic problem involving a weight function: -div(a(x)∇υ) = f(x, u) in Ω and u = 0 on ∂Ω (P) where, Ω is a regular bounded subset and ℝN ≥ 2, a(x) is a nonnegative function and f(x, t) is allowed to be sign-changing. We employ variational techniques to prove … …Journal of Mathematics and Statistics, Vol. 17, Issue 1 · 8 Feb 2021 · 7,112 accessesView PDFCite
Research ArticleOpen accessIn the abstractSensing the Hydrogeomorphology and Palaeohydrologic Features of Mars Planet with Inference from the Egyptian Desert: An Insight from Satellite ImagesMohamed YousifThe water access in any planet of the universe can be considered a crucial evidence for life existence. The study of Mars has special importance where it has a complex preserved geological record of a time period longer than on Earth. Many regions of Mars planet are subjected to observations through the obtained satellite images in comparison to similar areas … …Space Science International, Vol. 4, Issue 1 · 27 Apr 2020 · 13,200 accessesView PDFCite