Search results for "rational cohomology classes"

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Generalized Hodge classes on the moduli space of curves

2003

On the moduli space of curves we consider the cohomology classes which can be viewed as a generalization of the Hodge classes λi defined by Mumford in [6]. Following the methods used in this paper, we prove that these classes belong to the tautological ring of the moduli space.

Settore MAT/03 - Geometriarational cohomology classes hodge classes
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Combinatorics of Mumford-Morita-Miller classes in low genus

2003

Here we use elementary combinatorial arguments to give explicit formulae and relations for some cohomology classes of moduli spaces of stable curves of low genus.

rational cohomology classes moduli spaces of rational curvesSettore MAT/03 - Geometria
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