English

Simply connected symplectic 4-manifolds with $b_2^+ =1$ and $c_1^2 =2$

Geometric Topology 2009-11-10 v3 Symplectic Geometry

Abstract

In this article we construct a new family of simply connected symplectic 4-manifolds with b2+=1b_2^+ =1 and c12=2c_1^2 =2 which are not diffeomorphic to rational surfaces by using rational blow-down technique. As a corollary, we conclude that a rational surface CP27CPˉ2{\mathbf CP}^2 \sharp 7{\bar{{\mathbf CP}}^2} admits an exotic smooth structure.

Keywords

Cite

@article{arxiv.math/0311395,
  title  = {Simply connected symplectic 4-manifolds with $b_2^+ =1$ and $c_1^2 =2$},
  author = {Jongil Park},
  journal= {arXiv preprint arXiv:math/0311395},
  year   = {2009}
}

Comments

12 pages, some errors were fixed