“…In these works, following the ideas from [
41, 42] and motivated by Adams' inequality (), Sani [
43] studied a class of problems involving the biharmonic operator and a class of spherically symmetric potentials (or even coercive) and bounded from below by a positive constant. Aouaoui and Albuquerque [
44] considered potentials and weights that are radial and can have singularity at the origin and can vanish at infinity. Miyagaki et al [
45] studied the existence of ground state solution for fourth‐order elliptic equations of the form
where
is a continuous nonnegative function with polynomial growth at infinity,
is a continuous nonnegative function with exponential growth, and
is a positive bounded continuous function that can vanish at infinity in sense that if
is a sequence of Borel sets of
with
, for some
, then
…”