A story of webs: the webs by conics on del Pezzo quartic surfaces and Gelfand-MacPherson's web of the spinor tenfold

Luc Pirio

In a previous paper, we studied the web by conics ${\mathcal{W}}_{{\mathrm{dP}}_4}$ on a del Pezzo quartic surface ${\mathrm{dP}}_4$ and proved that it enjoys suitable versions of…