Hongjing Huang

Enhanced Lifespan Bounds for 1D Quasilinear Klein–Gordon Flows

Abstract In this article we consider one-dimensional scalar quasilinear Klein–Gordon equations with general nonlinearities, on both $${\mathbb {R}}$$ R and $${\mathbb {T}}$$ T . By employing a refined modified-energy framework of Ifrim and Tataru, we investigate long time lifespa...