In this article, we investigate the blow-up for local solutions to a semilinear wave equation in
the generalized Einstein–de Sitter spacetime with nonlinearity of derivative type. More …

We are interested in this article in studying the damped wave equation with localized initial
data, in the\textit {scale-invariant case} with mass term and two combined nonlinearities …

We investigate the nonexistence of nontrivial solutions to a semilinear Euler–Poisson–
Darboux–Tricomi equation with combined nonlinearity and provide the lifespan estimate …

We study in this article the blow-up of solutions to a coupled semilinear wave equations
which are characterized by linear damping terms in the\textit {scale-invariant regime}, time …

This paper is related to the blow-up results of solutions to the Cauchy problem of semilinear
generalized Tricomi equations, which contain a scale-invariant damping term and a mass …

This paper addresses the Cauchy problem for wave equations with scale-invariant time-
dependent damping and nonlinear time-derivative terms, modeled as $$\partial_ {t}^ 2u …

In this paper, we begin by establishing local well-posedness for the semilinear regular Euler-
Poisson-Darboux-Tricomi equation. Subsequently, we derive a lifespan estimate with the …

This work was concerned with the weakly coupled system of semi-linear wave equations
with time dependent speeds of propagation, damping terms, and derivative nonlinear terms …

The main purpose of this paper is to study the formation of singularity for a coupled system of
wave equations with damping terms, negative mass terms, and divergence form …

In this note, we derive a blow-up result for a semilinear generalized Tricomi equation with
damping and mass terms having time-dependent coefficients. We consider these …