A continuumM is almost chainable if, for each
positive number , there exists an open cover D
of M with mesh and a chain C of elements of
D and an end link L of C such that no element of
intersects any link of C other than L and
every point of M is at a distance less than
from some link of C.
Janusz J. Charatonik, Pawel Krupski and Pavel Pyrih 2001-02-21
, there exists an open cover D
of M with mesh 
intersects any link of C other than L and
every point of M is at a distance less than