Full paper in PDF:
$% J. C. Gómez Larrañaga and F. J. González Acuña, On the Homological Category of
3-Manifolds, Rev. Mat. Univ. Complut. Madrid 4 (1991), no. 2, 3, 213–217.%$
On the Homological Category of 3-Manifolds
Let
be a closed, connected, orientable 3-manifold. Denote by
the connected sum of
copies of
. We prove that if the homological
category of
is three then for some
,
is isomorphic (as a
ring) to
.
1991 Mathematics Subject Classification: 57N10, 55M30.