%0 Journal Article %T On the Beauville form of the known irreducible symplectic varieties %A Antonio Rapagnetta %J Mathematics %D 2006 %I arXiv %X We study the global geometry of the ten dimensional O'Grady irreducible symplectic variety. We determine its second Betti number, its Beauville form and its Fujiki constant. %U http://arxiv.org/abs/math/0606409v1