\[f = \ell_1^d + \cdots + \ell_r^d\]

Definition.The Waring rank of a homogeneous polynomial $f \in C[x_1, \ldots, x_n]_d$ is the minimum $r$ such thatfor some linear forms $\ell_1, \ldots, \ell_r \in C[x_1, \ldots, x_n]_1$.

Problem.Give asymptotic bounds on A(n,d), the minimum Waring rank among all polynomials in $C[x_1, \ldots, x_n]_d$ whose support is the set of all squarefree monomials of degree $d$ in $n$ variables.

I know that \(2^{d-1} \le A(n,d) \le O(\min(6.75^d, 4.075^d \log n)).\)

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