The universal cover of the second-type locus of a cubic
Frank Gounelas
math.AGarXiv:2608.08909
Abstract
We prove that the surface of second-type lines on a general cubic fourfold has fundamental group of order two. Its universal cover, constructed by Huybrechts, is obtained by considering the two ramification points of the Gauss map along each second-type line.
Create a lesson
Related papers
Relative cone of curves and extremal contractions of a successive blowup
Yuto Masamura
Bertini's theorem for F-rationality is false
Thomas Polstra, Austyn Simpson
Surfaces of general type with extremal cotangent dimension
Damian Brotbek, Bruno de Oliveira, Erwan Rousseau
Monodromic Perverse Sheaves on Shifted Contact Stacks
Efe İzbudak
On curves with one place at infinity
Abdallah Assi, Wael Mahboub
Pedal Curves of a Bicorn
Thierry Dana-Picard, Moshe Hanau, Shmuel Krichevsky