partial integro-differential equation with a weakly singular kernel (TFPIDE). The main idea of
this approach is to set up a new Hilbert space that satisfies the initial and boundary
conditions. The new spectral collocation approach is applied to obtain precise numerical
approximation using new basis functions based on shifted first-kind Chebyshev polynomials
(SCP1K). Furthermore, we support our study by a careful error analysis of the suggested …