Liouville theorems have long been a cornerstone in the study of partial differential equations, offering fundamental insights into the nonexistence of non-trivial solutions under specific growth ...

For example, investigations into the spectral properties of the indefinite non-self-adjoint Sturm–Liouville operator have led to new integral representations and uniqueness theorems, enhancing ...

Uniqueness/nonuniqueness for nonnegative solutions of second-order parabolic equations of the form u_ t=Lu+Vu-\gamma u^p in R^n. (with Pinsky, R. G.) J. Differential Equations 192 (2003), no. 2, ...