Hidden attractors in a new fractional–order discrete system: Chaos, complexity, entropy, and control

Ouannas Adel^{1, 2}, Khennaoui Amina Aicha³, Momani Shaher^{2, 4}, Pham Viet-Thanh^{5, †}, El-Khazali Reyad⁶

Approximate entropy of the fractional-order discrete system (9) versus ν with a₁ = 1, a₂ = 0.7, a₃ = 1, and a₄ = 0.7.