It makes use of the notion of polar varieties

Applying this formula to the cone over a projective variety V gives an expression for the degree of the projective dual variety ˇ V which depends only on the local

V’Ve ask now in general the question that has been asked and answered for curves: what is the greatest possible geometric genus of an irreducible, nondegenerate variety

Deligne and Hain ([i] and [2]) each have defined functorial mixed Hodge struc- tures on 7Ti(X, Xo), X an algebraic variety. These vary as the point

In [G-V] there is an ample discussion on the rela- tions between the concepts of adjoint to a curve on a smooth surface with an investigation on the conductor sheaf

L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des

In this example, the inverted model is the projection of the initial (arbitrary) model on t o the subspace spanned by the eigenvectors related to the

In particular, we show the non–emptiness of suitable generic dual polar varieties of (possibly singular) real varieties, show that generic polar varieties may become singular at

- Nikos Koutsiaras, Department of Political Science and Public Administration, University of Athens [European integration, Employment and Labour Market Policy, Social