The Deligne–Mumford and the Incidence Variety Compactifications of the Strata of ΩMg ; Les compactifications de Deligne–Mumford et de la variété d’incidence des strates de ΩMg
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Title:
The Deligne–Mumford and the Incidence Variety Compactifications of the Strata of ΩMg ; Les compactifications de Deligne–Mumford et de la variété d’incidence des strates de ΩMg
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Description:
The main goal of this work is to construct and study a reasonable compactification of the strata of the moduli space of abelian differentials. This allows us to compute the Kodaira dimension of some strata of the moduli space of abelian differentials. The main ingredients to study the compactifications of the strata are a version of the plumbing cylinder construction for differential forms and an extension of the parity of the connected components of the strata to the differentials on curves of compact type. We study in detail the compactifications of the hyperelliptic minimal strata and of the odd minimal stratum in genus three.