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Haken
-
Kiefer
Haken
adjective
—
(
topology
,
of
a
3-
manifold
)
Irreducible
,
compact
,
and
containing
a
non
-
∂
-
parallel
incompressible
surface
(
besides
a
sphere
or
disk
).
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Kiefer
properNoun
—
A
town
in
Oklahoma
.
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