Estimates for Emden–Fowler type inequalities with absorption term

We obtain improved estimates of the Keller–Osserman type for second-order elliptic semilinear inequalities in the non-divergent form sign(u)(ai j (x)uxi x j + bi (x)uxi ) c(x)|x|−2|u|σ . Special cases of rapidly growing or decaying weights c(x) and planar domains are also treated.