Special Session 70: Fractional Calculus: Theory, Methods and Applications

Decay estimates for the time-fractional evolution equations with time-dependent coefficients

Berikbol T Torebek
Institute of Mathematics and Mathematical Modeling
Kazakhstan
Co-Author(s):    Asselya Smadiyeva
Abstract:
In this talk, the initial-boundary value problems for the time-fractional degenerate evolution equations are considered. Firstly, in the linear case, we obtain the optimal rates of decay estimates of the solutions. The decay estimates are also established for the time-fractional evolution equations with nonlinear operators such as: p-Laplacian, the porous medium operator, degenerate operator, mean curvature operator, and Kirchhoff operator. At the end, some applications of the obtained results are given to derive the decay estimates of global solutions for the time-fractional Fisher-KPP equation and the time-fractional porous medium equation with the nonlinear source.