A Four-Dimensional Hyperchaotic Finance System and Its Control Problems

<div>Lyapunov exponent of system (<a href="https://static.hindawi.com/articles/jcse/volume-2018/4976380/figures/#EEq1">1</a>) with varying time <span class="nowrap"><svg height="8.02022pt" id="M83" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -7.81382 4.54925 8.02022" width="4.54925pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M324 430H196L233 583L223 592L145 529L120 430H54L29 396L31 388H111L56 126C33 15 54 -12 77 -12C137 -12 214 57 250 95L233 119C208 92 155 59 138 59C126 59 120 70 131 125L186 390L298 394L324 430Z" id="g113-117"></path></g></svg>.</span></div>

Journal of Control Science and Engineering

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Figure 3

Figure 3: A Four-Dimensional Hyperchaotic Finance System and Its Control Problems 