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math.AG2003★ 3 cited
Rational cohomology of the moduli space of genus 4 curves
Orsola Tommasi
We prove that the Poincare' polynomial of the moduli space of smooth genus 4 curves is 1+t^2+t^4+t^5. We show this by producing a stratification of the space, such that all strata…
math.AG2003
Some remarks on varieties with degenerate Gauss image
Emilia Mezzetti, Orsola Tommasi
We consider projective varieties with degenerate Gauss image whose focal hypersurfaces are non-reduced schemes. Examples of this situation are provided by the secant varieties of S…