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Optimal second-order SSP coefficient conjecture for fully implicit Runge–Kutta methods
Let an $s$ -stage fully implicit Runge–Kutta method have order conditions … and let $r>0$ satisfy the absolute-monotonicity conditions … with $I+rA$ invertible and…
Conjectureopennumerical-analysis runge-kutta-methods strong-stability-preservingarXiv posted 2 days ago

Optimal second-order SSP coefficient conjecture for fully implicit Runge–Kutta methods