A slicing-based iteration argument yields a pointwise estimate proving the known logarithmic loss in lifespan for the 2D quadratic semilinear wave equation when the initial speed has nonzero zeroth moment.
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A revisit via slicing method on a quadratic semilinear wave equation in two space dimensions
A slicing-based iteration argument yields a pointwise estimate proving the known logarithmic loss in lifespan for the 2D quadratic semilinear wave equation when the initial speed has nonzero zeroth moment.