RECOGNIZING NONORIENTABLE SEIFERT BUNDLES
1992 ◽
Vol 01
(04)
◽
pp. 471-475
◽
Roughly speaking, a compact, orientable, irreducible 3-manifold M with infinite fundamental group is a Seifert fiber space, if either 1) π1M contains a nontrivial, cyclic, normal subgroup (the so-called Seifert-fiber-space conjecture), 2) M is finitely covered by a Seifert fiber space, or 3) π1M is isomorphic to the group of a Seifert fiber space. Excluding a fake P2 × S1 where necessary, we show in this paper that similar results hold when M is nonorientable.
1994 ◽
Vol 37
(4)
◽
pp. 482-489
◽
1991 ◽
Vol 50
(1)
◽
pp. 160-170
◽
1961 ◽
Vol 5
(2)
◽
pp. 49-66
◽
1975 ◽
Vol 19
(3)
◽
pp. 237-244
◽
2019 ◽
Vol 156
(2)
◽
pp. 199-250
◽
1965 ◽
Vol 61
(3)
◽
pp. 639-646
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