Seifert fibred manifolds and Dehn surgery
Seifert fibred manifolds and Dehn surgery
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Seifert 纤维歧管和 Dehn 手术
DOI:
10.1016/0040-9383(96)00009-2
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发表时间:
1997
期刊:
影响因子:
--
通讯作者:
Kimihiko Motegixf
中科院分区:
文献类型:
--
作者:
Katura Miyazak;Kimihiko Motegixf
When can one obtain a Seifert fibred manifold by Dehn surgery on a knot in the 3-sphere S3? In [l] Moser conjectured that Dehn surgery on a non-torus knot could not produce a Seifert fibred manifold, and in particular, could not produce a lens space. However certain cable knots, connected sums of two torus knots and certain hyperbolic knots turn out to be counterexamples to Moser’s conjecture [2-S]. Bleiler and Litherland [9] and Wu [lo] completely determined when surgeries on satellite knots produce lens spaces. On the other hand, the cyclic surgery theorem [11] and recent finite surgery theorems [12, 7, 13] gave some restrictions on the surgery slopes which produce manifolds with cyclic or finite fundamental groups.(The spherical space form conjecture states that every 3-manifold with finite fundamental group is Seifert fibred.) For instance, the cyclic surgery slopes on non-torus knots are known to be integers, and finite surgery slopes on non-torus, non-cable knots have denominators at most 2. We note that all the known examples of finite surgery slopes on such knots are integers (see [12, 7, 13]). In this paper we shall describe those surgeries on satellite knots which give Seifert fibred manifolds (Theorems 1.2 and 1.4). As a corollary, we obtain the following result on the surgery slopes.COROLLARY 1.1. Let K be a satellite knot which is not cabled exactly once. If a non-trivial surgery on K yields a Seifert jibred manifold, then the surgery slope is integral. Moreover, there are at most four such surgeries; if there are four, then they are two pairs of successive integers.