The number of reducible space curves over a finite field
arXiv:1307.1633 · doi:10.1016/j.jnt.2012.08.027
Abstract
"Most" hypersurfaces in projective space are irreducible, and rather precise estimates are known for the probability that a random hypersurface over a finite field is reducible. This paper considers the parametrization of space curves by the appropriate Chow variety, and provides bounds on the probability that a random curve over a finite field is reducible.