2 problems

Let $S_d$ be the real $d$-simplex, let $F_4$ be the set of $N=\binom{d+4}{4}$ points constructed in the paper, and let $\ell_j$ be the associated fundamental Lagrange polynomials.…

Let $S_d$ be the real $d$-simplex, and let $F_3\subset S_d$ consist of its $d+1$ vertices, the $2\binom{d+1}{2}$ edge points $tV_i+(1-t)V_j$ with $i\ne j$ and $t=(1+1/\sqrt{5})/2$,…