{ "id": "1602.02371", "version": "v1", "published": "2016-02-07T13:06:41.000Z", "updated": "2016-02-07T13:06:41.000Z", "title": "Cosmetic surgery and the $SL(2,\\mathbb{C})$ Casson invariant for two-bridge knots", "authors": [ "Kazuhiro Ichihara", "Toshio Saito" ], "comment": "11 pages, 2 figures", "categories": [ "math.GT" ], "abstract": "We consider the cosmetic surgery problem for two-bridge knots in the 3-sphere. It is seen that all the two-bridge knots at most 9 crossings other than $9_{27} = S(49,19)=C[2,2,-2,2,2,-2]$ admits no purely cosmetic surgery pairs. Then we show that any two-bridge knot of the Conway form $[2x,2,-2x,2x,2,-2x]$ with $x \\ge 1$ admits no cosmetic surgery pairs yielding homology 3-spheres, where $9_{27}$ appears for $x=1$. Our advantage to prove this is using the $SL(2,\\mathbb{C})$ Casson invariant.", "revisions": [ { "version": "v1", "updated": "2016-02-07T13:06:41.000Z" } ], "analyses": { "subjects": [ "57M50", "57M25", "57M27", "57N10" ], "keywords": [ "two-bridge knot", "casson invariant", "cosmetic surgery pairs yielding homology", "purely cosmetic surgery pairs", "cosmetic surgery problem" ], "note": { "typesetting": "TeX", "pages": 11, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2016arXiv160202371I" } } }