Идентичность: личность, общество, политика. Новые контуры исследовательского поля. 2023. P.. 165-175
An abstract Cauchy problem for a second-order differential equation with nonlinear operator coefficients is considered. The local solvability of the problem in suitable spaces of abstract continuous and differentiable functions is proved. Sufficient conditions for finite-time blow-up of its solutions are obtained.