Figure 3From: A novel exact solution for the fractional Ambartsumian equationComparison between \(\sigma _{12}\) (present) and \(\theta _{12}\), \(\theta _{24}\), and \(\theta _{36}\) in Ref. [42] at \(\lambda =1\), \(\xi =1.5\), and \(\alpha =0.5\)Back to article page