Publications [#324404] of John Harer

Papers Published

1. Harer, J, On Almost-Everywhere Convergent Eigenfunction Expansions of the Laplace-Beltrami Operator, Mathematical Proceedings of the Cambridge Philosophical Society, vol. 92 no. 1 (January, 1982), pp. 133-138, Cambridge University Press (CUP) [doi]
   (last updated on 2024/04/19)

   Abstract:
   Every smooth, closed, orientable manifold of dimension 3 contains a fibred knot, i.e. an imbedded circle K such that M – K is the total space of a fibre bundle over S1 whose fibre F is standard near K. This means the boundary of the closure of F is K so that K is null-homologous in M. A natural problem suggested by Rolfsen (see (2), problem 3·13) is to determine which elements of π1M3 may be represented by fibred knots. We deal with this by proving theTheorem. The collection of all elements of π1 M3 which can be represented by fibred knots is exactly the commutator subgroup [π1 M3, π1 M3].