Dynamic Modeling and Analysis of  the Email Virus Propagation

<table>The phase diagram of system (<a href="https://static.hindawi.com/articles/ddns/volume-2012/472072/figures/#EEq2.5">2.9</a>) when <svg height="20.4125" id="M326" style="vertical-align:-2.64594pt" version="1.1" viewbox="0 0 142.28751 20.4125" width="142.28751" xmlns="http://www.w3.org/2000/svg">
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<tspan style="font-size: 12.50px; " x="30.459999" y="-0.60000002">√</tspan>
<tspan style="font-size: 12.50px; " x="0" y="0">𝐵</tspan>
<tspan style="font-size: 12.50px; " x="12.165419" y="0">&lt;</tspan>
<tspan style="font-size: 12.50px; " x="24.205809" y="0">2</tspan>
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<tspan style="font-size: 12.50px; " x="0" y="0">𝑛</tspan>
<tspan style="font-size: 12.50px; " x="6.2139912" y="0">/</tspan>
<tspan style="font-size: 12.50px; " x="9.6898251" y="0">𝑚</tspan>
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<tspan style="font-size: 12.50px; " x="54.062973" y="0">+</tspan>
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Discrete Dynamics in Nature and Society

Dynamic Modeling and Analysis of the Email Virus Propagation

Figure 2