Consider (complex) quartic forms of three variables that can be factored as product of quadratic forms. Being the image of a regular map from $\mathbb{P}(S_2) \times \mathbb{P}(S_2)$ to $\mathbb{P}(S_4)$, it is a projective variety. Do we know explicitly polynomials cut it set-theoretically?
2026-03-26 03:09:30.1774494570
Factorization of quartic forms
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