Forecasting the Cumulative Confirmed Cases with the FGM and Fractional-Order Buffer Operator in Different Stages of COVID-19

<div>Cumulative confirmed cases, stringency index, and mobility index in the United Kingdom, Spain, the United States, and the Republic of South Africa (March 1, 2020–March 31, 2020).</div>

Journal of Mathematics

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Figure 7

Figure 7: Forecasting the Cumulative Confirmed Cases with the FGM and Fractional-Order Buffer Operator in Different Stages of COVID-19 