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math.AG2000★ 42 cited
The cup product of the Hilbert scheme for K3 surfaces
Manfred Lehn, Christoph Sorger
To any graded Frobenius algebra A we associate a sequence of graded Frobenius algebras A^[n] in such a way that for any smooth projective surface X with trivial canonical divisor t…
math.AG2000★ 1 cited
Symmetric groups and the cup product on the cohomology of Hilbert schemes
Manfred Lehn, Christoph Sorger
The integral cohomology ring of the Hilbert scheme of n-tuples on the affine plane is shown to be isomorphic to the graded ring associated to a filtration of the ring of integral c…