“…Simultaneously, in order to study Kondo effect in theory, a lot of numerical methods have been advanced, such as the Green's function method [30] , perturbation theory [31] , the numerical renormalization group technique [32] and scaling analysis method [33] . Simultaneously, in order to study Kondo effect in theory, a lot of numerical methods have been advanced, such as the Green's function method [30] , perturbation theory [31] , the numerical renormalization group technique [32] and scaling analysis method [33] .…”