On Glassey’s conjecture for semilinear wave equations in Friedmann–Lemaître–Robertson–Walker spacetime

spacetime version of Glassey's conjecture for the time derivative nonlinearity. We also show blow-up results for the space time derivative nonlinearity. [2/2 of https://t.co/nDX2edl4KV]

Consider nonlinear wave equations in the spatially flat Friedmann-Lema\^itre-Robertson-Walker (FLRW) spacetimes. We show blow-up in finite time of solutions and upper bounds of the lifespan of blow-up solutions to give the FLRW [1/2 of https://t.co/nDX2edl

Kimitoshi Tsutaya, Yuta Wakasugi: On Glassey's conjecture for semilinear wave equations in Friedmann-Lema\^itre-Robertson-Walker spacetime https://t.co/Jb0kzMfplH https://t.co/Ixj2RhO8Ae