A Mean-Variance Portfolio Selection Model with Interval-Valued Possibility Measures

<div>Some interval-valued possibilistic efficient portfolios for model (<a href="https://static.hindawi.com/articles/mpe/volume-2020/4135740/figures/#EEq28">29</a>).</div>

Mathematical Problems in Engineering

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Figure 2: A Mean-Variance Portfolio Selection Model with Interval-Valued Possibility Measures 