2 papers
math.AG2026
On the Geometry of Sixers on the Fermat Cubic Surface
Giuseppe Favacchio, Grzegorz Malara
A sixer is a configuration of six pairwise skew lines on a smooth cubic surface, equivalently a choice of six exceptional curves defining a blow-down to . We study th…
math.AG2025
Unexpected hypersurfaces of type
Marek Janasz, Grzegorz Malara, Halszka Tutaj-GasiÅska
Unexpected hypersurfaces arise when vanishing in points of a set and higher-order vanishing along a general linear subspace fails to impose the expected number of independent c…