A generalized Reeb component is a pair consisting of a compact
manifold
with nonempty boundary and a transversely
orientable codimension-one foliation
on
which is tangent to
, such that the foliation holonomy groups of all leaves
in the interior
are trivial, all interior leaves are noncompact, and all leaves
of
are proper. Generalized Reeb components are obvious generalizations of Reeb
components.
The introduction of the generalized version of the Reeb component facilitates the proof of many significant
results in the theory of 3-manifolds and of foliations.
It is well-known that generalized Reeb components are transversely
orientable and that a manifold admitting a generalized Reeb component also admits a nice
vector field
(Imanishi and Yagi 1976). Moreover, given a generalized Reeb
component
,
is a fibration over
.
Like many notions in geometric topology, the generalized Reeb component can be presented in various contexts. One source describes a generalized
Reeb component on a closed manifold of dimension
3
with foliation
to be a submanifold
of maximal dimension
which is bounded by tori
such that the orientation
of these tori as leaves of
is the same as (or simultaneously opposite to) their orientation
as the boundary components of
(Eliashberg and Thurston 1998). Framed in this way, generalized
Reeb components are shown to have deep connections to various notions in foliation
theory, e.g., in presenting an existence criterion for a closed 3-manifold
to admit a taut foliation.