English

Complexification of real cycles and Lawson suspension theorem

Algebraic Geometry 2007-05-23 v2 K-Theory and Homology

Abstract

We embed the space of totally real rr-cycles of a totally real projective variety into the space of complex rr-cycles by complexification. We provide a proof of the holomorphic taffy argument in the proof of Lawson suspension theorem by using Chow forms and this proof gives us an analogous result for totally real cycle spaces. We use Sturm theorem to derive a criterion for a real polynomial of degree dd to have dd distinct real roots and use it to prove the openness of some subsets of real divisors. This enables us to prove that the suspension map induces a weak homotopy equivalence between two enlarged spaces of totally real cycle spaces.

Keywords

Cite

@article{arxiv.math/0510548,
  title  = {Complexification of real cycles and Lawson suspension theorem},
  author = {Jyh-Haur Teh},
  journal= {arXiv preprint arXiv:math/0510548},
  year   = {2007}
}

Comments

16 pages, to appear in the Journal of the London Mathematical Society