A time plot for the system given in Example 2.

<p>A time plot for the system given in Example 2.</p

The way <i>I</i>₁ and <i>I</i>₂ vary with the increasing <i>β</i>₁, provided μδ>α+δγ1.

<p>The way <i>I</i>₁ and <i>I</i>₂ vary with the increasing <i>β</i>₁, provided <math><mrow><mi>μ</mi><mi>δ</mi><mo>></mo><mrow><mi>α</mi><mo>+</mo><mi>δ</mi></mrow><msub><mi>γ</mi><mn>1</mn></msub></mrow></math>.</p

The way <i>I</i>₁ and <i>I</i>₂ vary with the increase of <i>γ</i>₁.

<p>The way <i>I</i>₁ and <i>I</i>₂ vary with the increase of <i>γ</i>₁.</p

A time plot for the system given in Example 1.

<p>A time plot for the system given in Example 1.</p

The phase portrait for the equivalent two-dimensional system of the system given in Example 2.

<p>The phase portrait for the equivalent two-dimensional system of the system given in Example 2.</p

The diagram for the new model.

<p>The diagram for the new model.</p

(1) <i>p</i>(<i>t</i>) in the case <i>λ</i>_max ∈ <i>I</i>₁; (2) <i>p</i>(<i>t</i>) in the case <i>λ</i>_max ∈ <i>I</i>₂; (3) <i>p</i>(<i>t</i>) in the case <i>λ</i>_max ∈ <i>I</i>₃.

<p>(1) <i>p</i>(<i>t</i>) in the case <i>λ</i>_max ∈ <i>I</i>₁; (2) <i>p</i>(<i>t</i>) in the case <i>λ</i>_max ∈ <i>I</i>₂; (3) <i>p</i>(<i>t</i>) in the case <i>λ</i>_max ∈ <i>I</i>₃.</p

Diagram of assumptions (H1)-(H3).

<p>Diagram of assumptions (H1)-(H3).</p

The distribution of the three edges in T₁₂.

<p>The distribution of the three edges in T₁₂.</p

The distribution of the four edges in T₁₁.

<p>The distribution of the four edges in T₁₁.</p