Is there an example of a hypersurface $X$ of some projective space $\mathbb{P}^n$ such that there exists an invertible sheaf $\mathcal{L}$ on $X$, not isomorphic to the structure sheaf $\mathcal{O}_X$, but has the same Hilbert function as $\mathcal{O}_X$?
Hilbert polynomial of structure sheaf of hypersurfaces
Jana
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