Invariants for families of Brieskorn varieties

Terry Lawson
1987 Proceedings of the American Mathematical Society  
Fintushel and Stern have defined invariants for certain homology 3spheres which, if positive, show that the homology 3-sphere cannot bound a positive definite 4-manifold with no 2-torsion in its first homology. In this note a numbertheoretic formula is given for these invariants. It is used to show that all members of certain families of Brieskorn varieties have the same invariants, and hence exhibit the same nonbounding when one of the invariants is positive.
doi:10.1090/s0002-9939-1987-0866451-x fatcat:xwzubegpdvdavna3escp7s3wxe