Tangential varieties of Segre-Veronese surfaces are never defective
arXiv:1805.11964 · doi:10.1007/s13163-019-00305-2
Abstract
We compute the dimensions of all the secant varieties to the tangential varieties of all Segre-Veronese surfaces. We exploit the typical approach of computing the Hilbert function of special 0-dimensional schemes on projective plane by using a new degeneration technique.
23 pages