Fig. 4From: Network-based indices of individual and collective advising impacts in mathematicsYearly evolution of individual mathematicians’ a-indices: 10 out of top 13 individuals according to the current a-index value, as indicated in Table 1 (the plots for M.A. Krasnoselskii, A.N. Kolmogorov, and H.A. Behnke are not shown due to missing data on graduation years of some of their descendants), 1900–presentBack to article page