Results 11 to 20 of about 117,052 (250)

Logistic equation and COVID-19 [PDF]

Chaos, Solitons and Fractals, 2020
The generalized logistic equation is used to interpret the COVID-19 epidemic data in several countries: Austria, Switzerland, the Netherlands, Italy, Turkey and South Korea. The model coefficients are calculated: the growth rate and the expected number of infected people, as well as the exponent indexes in the generalized logistic equation. It is shown
Efim Pelinovsky, Andrey Kurkin, O E Kurkina   +2 more
exaly   +6 more sources

Fractal Logistic Equation [PDF]

Fractal and Fractional, 2019
In this paper, we give difference equations on fractal sets and their corresponding fractal differential equations. An analogue of the classical Euler method in fractal calculus is defined. This fractal Euler method presets a numerical method for solving
Alireza Khalili Golmankhaneh, Carlo Cattani   +1 more
doaj   +4 more sources

Generalized logistic equation on Networks

Comptes Rendus. Mathématique, 2023
In this paper, we consider a general single species model in a heterogeneous environment of $n$ patches ($n\ge 2$), where each patch follows a generalized logistic law. First, we prove the global stability of the model.
Elbetch, Bilel
doaj   +3 more sources

A Discrete Equivalent of the Logistic Equation [PDF]

Advances in Difference Equations, 2010
A discrete equivalent and not analogue of the well-known logistic differential equation is proposed. This discrete equivalent logistic equation is of the Volterra convolution type, is obtained by use of a functional-analytic method, and is explicitly ...
Petropoulou EugeniaN
doaj   +4 more sources

Paradoxes in the logistic equation? [PDF]

Ecological Modelling, 2005
Levins and Ginzburg raised two paradoxes concerning the logistic equation of population growth. None of them received a satisfactory answer within the frame of the original equation. Here, we propose solutions to both paradoxes.
Louis-Félix Bersier
exaly   +4 more sources

On an Anisotropic Logistic Equation

Mathematics
We consider a nonlinear Dirichlet problem driven by the (p(z),q)-Laplacian and with a logistic reaction of the equidiffusive type. Under a nonlinearity condition on a quotient map, we show existence and uniqueness of positive solutions and the result is ...
Leszek Gasiński, Nikolaos S. Papageorgiou   +1 more
doaj   +2 more sources

The logistic equation in the context of Stieltjes differential and integral equations

Electronic Journal of Qualitative Theory of Differential Equations, 2023
In this paper, we introduce logistic equations with Stieltjes derivatives and provide explicit solution formulas. As an application, we present a population model which involves intraspecific competition, periods of hibernation, as well as seasonal ...
Ignacio Márquez Albés, Antonín Slavík   +1 more
doaj   +4 more sources

A note on stability of stochastic logistic equation

Applied Mathematics Letters, 2013
Abstract This report is concerned with a famous stochastic logistic equation d x ( t ) = x ( t ) ( 1 − x ( t ) / K ) [ r ( t ) d t + σ ( t ) d B ( t ) ] , where B ( t ) is a standard Brownian motion.
Meng Liu
exaly   +2 more sources

Global Dynamics of Generalized Logistic Equations

Advanced Nonlinear Studies, 2018
We consider a parameter dependent parabolic logistic population model with diffusion and degenerate logistic term allowing for refuges for the population.
Daners Daniel, López-Gómez Julián
doaj   +3 more sources

Quasinormal Forms for Chains of Coupled Logistic Equations with Delay

Mathematics, 2022
In this paper, chains of coupled logistic equations with delay are considered, and the local dynamics of these chains is investigated. A basic assumption is that the number of elements in the chain is large enough.
Sergey Kashchenko
doaj   +1 more source