Non-defectivity of Segre-Veronese varieties

Published 28 Jun 2024 in math.AG | (2406.20057v1)

Abstract: We prove that Segre-Veronese varieties are never secant defective if each degree is at least three. The proof is by induction on the number of factors, degree and dimension. As a corollary, we give an almost optimal non-defectivity result for Segre-Veronese varieties with one degree equal to one and all the others at least three.

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