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Now showing items 1-10 of 18

#### Basin of Attraction through Invariant Curves and Dominant Functions

(Hindawi, 2015)

We study a second-order difference equation of the form 𝑧ₙ₊₁= 𝑧ₙ𝐹(𝑧ₙ₋₁) + ℎ, where both 𝐹(𝑧) and 𝑧𝐹(𝑧) are decreasing. We consider a set of invariant curves at ℎ = 1 and use it to characterize the behaviour of ...

#### The Beverton–Holt model with periodic and conditional harvesting

(Taylor & Francis Online, 2009)

In this theoretical study, we investigate the effect of different harvesting strategies on the discrete Beverton–Holt model in a deterministic environment. In particular, we make a comparison between the constant, periodic ...

#### The Discrete Beverton-Holt Model with Periodic Harvesting in a Periodically Fluctuating Environment

(Springer, 2010)

We investigate the effect of constant and periodic harvesting on the Beverton-Holt model in a periodically fluctuating environment. We show that in a periodically fluctuating environment, periodic harvesting gives a better ...

#### A Global Attractor in Some Discrete Contest Competition Models with Delay under the Effect of Periodic Stocking

(Hindawi, 2013)

We consider discrete models of the form 𝒳ₙ₊₁= 𝒳ₙ𝒇(𝒳ₙ₋₁) + 𝒉ₙ , where 𝒉ₙ is a nonnegative 𝒑-periodic sequence representing stocking in the population, and investigate their dynamics. Under certain conditions on the ...

#### Coexistence and extinction in a competitive exclusion Leslie/Gower model with harvesting and stocking

(Taylor & Francis Online, 2009)

The principle of competitive exclusion states that when the competition between species is sufficiently strong, only the dominant species survives. In this paper, we examine the strategies of using stocking and harvesting ...

#### Existence and stability of periodic orbits of periodic difference equations with delays

(World Scientific Publishing, 2008)

In this paper, we investigate the existence and stability of periodic orbits of the p-periodic difference equation with delays xₙ = f(n - 1, xₙ₋ₖ). We show that the periodic orbits of this equation depend on the periodic ...

#### Periodic Orbits in Periodic Discrete Dynamics

(Elsevier, 2008)

We study the combinatorial structure of periodic orbits of nonautonomous difference equations 𝒳ₙ₊₁ = 𝒇ₙ(𝒳ₙ) in a periodically fluctuating environment. We define the Ӷ-set to be the set of minimal periods that are not ...

#### An Extension of Sharkovsy’s Theorem to Periodic Difference Equations

(Elsevier, 2006)

We present an extension of Sharkovsky’s Theorem and its converse to periodic difference equations. In addition, we provide a simple method for constructing a p-periodic difference equation having an r-periodic geometric ...

#### On the periodic logistic equation

(Elsevier, 2006)

We show that the 𝒑-periodic logistic equation 𝒳ₙ₊₁ = μₙ mod 𝒑𝒳ₙ(1 - 𝒳ₙ) has cycles (periodic solutions) of minimal periods 1; 𝒑; 2𝒑; 3𝒑; …. Then we extend Singer’s theorem to periodic difference equations, and use ...

#### The dynamics of some discrete models with delay under the eﬀect of constant yield harvesting

(Elsevier, 2013)

In this paper, we study the dynamics of population models of the form xn+1 = xnf(xn−1) under the eﬀect of constant yield harvesting. Results concerning stability, boundedness, persistence and oscillations of solutions are ...