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Herremans–Huybrechs–Trefethen conjecture on tapered lightning approximation of $x^\alpha$
Let $\alpha>0$ , let $N_1$ be the number of tapered lightning poles … and let $r_N(x)$ be the corresponding lightning-plus-polynomial approximation, with coefficients…
Conjectureopenapproximation-theory rational-approximation singular-functionsarXiv posted 2 days ago

Herremans–Huybrechs–Trefethen conjecture on tapered lightning approximation of xαx^\alphaxα