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math.AP2023
Theoretical study of nonlinear wave equations with combined power-type nonlinearities with variable coefficients
Milena Dimova, Natalia Kolkovska, Nikolai Kutev
In this paper, we study the initial boundary value problem for the nonlinear wave equation with combined power-type nonlinearities with variable coefficients. The global behavior o…
math.AP2023
Improved Hardy inequality with logarithmic term
Nikolai Kutev, Tsviatko Rangelov
New Hardy type inequality with double singular kernel and with additional logarithmic term in a ball is proved. As an application an estimate from below of…