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A numerical view on α-dissipative solutions of the Hunter-Saxton equation (2404.11174v2)

Published 17 Apr 2024 in math.NA, cs.NA, and math.AP

Abstract: We propose a new numerical method for $\alpha$-dissipative solutions of the Hunter-Saxton equation, where $\alpha$ belongs to $W{1, \infty}(\mathbb{R}, [0, 1))$. The method combines a projection operator with a generalized method of characteristics and an iteration scheme, which is based on enforcing minimal time steps whenever breaking times cluster. Numerical examples illustrate that these minimal time steps increase the efficiency of the algorithm substantially. Moreover, convergence of the wave profile is shown in $C([0, T], L{\infty}(\mathbb{R}))$ for any finite $T \geq 0$.

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