Abstract
Quadrics in the Grassmannian of lines in 3-space form a 19-dimensional projective space. We study the subvariety of coisotropic hypersurfaces. Following Gel’fand, Kapranov and Zelevinsky, it decomposes into Chow forms of plane conics, Chow forms of pairs of lines, and Hurwitz forms of quadric surfaces. We compute the ideals of these loci.
P. Bürgisser and P. Lairez were partially supported by DFG grant BU 1371/2-2.
K. Kohn was supported by a Fellowship from the Einstein Foundation Berlin.
B. Sturmfels was supported by the US National Science Foundation and the Einstein Foundation Berlin.
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Bürgisser, P., Kohn, K., Lairez, P., Sturmfels, B. (2016). Computing the Chow Variety of Quadratic Space Curves. In: Kotsireas, I., Rump, S., Yap, C. (eds) Mathematical Aspects of Computer and Information Sciences. MACIS 2015. Lecture Notes in Computer Science(), vol 9582. Springer, Cham. https://doi.org/10.1007/978-3-319-32859-1_10
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