On the intersection forms of spin 4-manifolds bounded by spherical 3-manifolds
arXiv:math/0110179 · doi:10.2140/agt.2001.1.549
Abstract
We determine the contributions of isolated singularities of spin V 4-manifolds to the index of the Dirac operator over them. From these data we derive certain constraints on the intersection forms of spin 4-manifolds bounded by spherical 3-manifolds, and also on the embeddings of the real projective planes into 4-manifolds.
Published by Algebraic and Geometric Topology at http://www.maths.warwick.ac.uk/agt/AGTVol1/agt-1-28.abs.html