| In this paper, we shall prove that any Heegaard splitting of a δ-reducible 3-manifold M, say M = W∪V, can be obtained by doing connected sums, boundary connected sums and self-boundary connected sums from Heegaard splittings of n manifolds M1,..., Mn, where Mi is either a solid torus or an irreducible, ?-irreducible manifold. |
