Polynomial time deterministic identity testingalgorithm for Σ^[3]ΠΣΠ^[2] circuits via Edelstein-Kelly type theorem for quadratic polynomials
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In this work we resolve conjectures of Beecken, Mitmann and Saxena [BMS13] and Gupta [Gup14], by proving an analog of a theorem of Edelstein and Kelly for quadratic polynomials. As immediate corollary we obtain the first deterministic polynomial time black-box algorithm for testing zeroness of Σ^[3]ΠΣΠ^[2] circuits.
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