English

Smooth structures on definite four-manifolds with infinite fundamental group

Geometric Topology 2026-04-24 v1

Abstract

For each odd integer p>1p > 1, we construct infinitely many pairwise non-diffeomorphic irreducible smooth structures on a definite 4-manifold with infinite fundamental group whose abelianization is Z/2pZ×Z/2Z\Z/2p\Z\times \Z/2\Z.

Keywords

Cite

@article{arxiv.2604.21317,
  title  = {Smooth structures on definite four-manifolds with infinite fundamental group},
  author = {Sebastián M. Camponovo and Rafael Torres},
  journal= {arXiv preprint arXiv:2604.21317},
  year   = {2026}
}