Seminario - Unexpected Hypersurfaces

il giorno 13 Marzo 2019, alle ore 15:30, in aula 1, Juan Migliore (University of Notre Dame, IN, USA) terrà un seminario dal titolo "Unexpected Hypersurfaces"

Abstract:
A number of papers recently have been written about the topic of
unexpected hypersurfaces. These are elements of a linear system of
hypersurfaces that have a singularity of prescribed multiplicity at
a general point in projective space, when the expected number of
conditions and the dimension of the linear system predict that there
should not be any such hypersurface (or sometimes when there are
simply more such hypersurfaces than the numbers predict). It is
interesting to see what the geometry of the base locus of the linear
system has to do with this existence. We will give some results
obtained in different recent papers.