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Xu's conjecture on the bound for the recursively defined polynomial $T_d$
At least 21 years old
For $d\ge 3$ , let $T_d$ be the recursively defined polynomial in the elementary symmetric functions on the standard simplex $T^d$ , and write $\|T_d\|_{C(T^d)}$ for its uniform norm…
openapproximation-theory multivariate-polynomials simplex
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Xu's conjecture on the bound for the recursively defined polynomial TdT_dTd​