Mathematics – Algebraic Geometry
Scientific paper
2007-10-15
Mathematics
Algebraic Geometry
Suggestions and comments are welcome. Submitted in 02/06 to the editors of the AG Seattle 2005 Proceedings
Scientific paper
Given a projective morphism of compact, complex, algebraic varieties and a relatively ample line bundle on the domain we prove that a suitable choice, dictated by the line bundle, of the decomposition isomorphism of the Decomposition Theorem of Beilinson, Bernstein, Deligne and Gabber, yields isomorphisms of pure Hodge structures. The proof is based on a new cohomological characterization of the decomposition isomorphism associated with the line bundle. We prove some corollaries concerning the intersection form in intersection cohomology, the natural map from cohomology to intersection cohomology, projectors and Hodge cycles, and induced morphisms in intersection cohomology.
de Cataldo Mark Andrea
Migliorini Luca
No associations
LandOfFree
Hodge-theoretic aspects of the Decomposition Theorem does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Hodge-theoretic aspects of the Decomposition Theorem, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hodge-theoretic aspects of the Decomposition Theorem will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-125983