[Jun Zhou] College of Computer and Mathematics, Central South University of Forestry and Technology, Changsha, Hunan, 410004, PR China

[Hao Zhang; Mengmeng Liu; Da Xu] School of Mathematics and Statistics, Hunan Normal University, Changsha, Hunan, 410081, PR China

[Hao Zhang] S

School of Mathematics and Statistics, Hunan Normal University, Changsha, Hunan, 410081, PR China

Semilinear fractional integro-differential equations;Mittag–Leffler function;Runge–Kutta methods;Spectral Galerkin method;Convergence