Your browser doesn't support javascript.
The fractional-order discrete COVID-19 pandemic model: stability and chaos.
Abbes, Abderrahmane; Ouannas, Adel; Shawagfeh, Nabil; Jahanshahi, Hadi.
  • Abbes A; Department of Mathematics, The University of Jordan, Amman, 11942 Jordan.
  • Ouannas A; Department of Mathematics and Computer Science, University of Larbi Ben M'hidi, 04000 Oum El Bouaghi, Algeria.
  • Shawagfeh N; Department of Mathematics, The University of Jordan, Amman, 11942 Jordan.
  • Jahanshahi H; Department of Mechanical Engineering, University of Manitoba, Winnipeg, MB R3T 5V6 Canada.
Nonlinear Dyn ; : 1-19, 2022 Aug 15.
Article in English | MEDLINE | ID: covidwho-2238258
ABSTRACT
This paper presents and investigates a new fractional discrete COVID-19 model which involves three variables the new daily cases, additional severe cases and deaths. Here, we analyze the stability of the equilibrium point at different values of the fractional order. Using maximum Lyapunov exponents, phase attractors, bifurcation diagrams, the 0-1 test and approximation entropy (ApEn), it is shown that the dynamic behaviors of the model change from stable to chaotic behavior by varying the fractional orders. Besides showing that the fractional discrete model fits the real data of the pandemic, the simulation findings also show that the numbers of new daily cases, additional severe cases and deaths exhibit chaotic behavior without any effective attempts to curb the epidemic.
Keywords

Full text: Available Collection: International databases Database: MEDLINE Language: English Journal: Nonlinear Dyn Year: 2022 Document Type: Article

Similar

MEDLINE

...
LILACS

LIS


Full text: Available Collection: International databases Database: MEDLINE Language: English Journal: Nonlinear Dyn Year: 2022 Document Type: Article