{ "id": "1411.0353", "version": "v1", "published": "2014-11-03T03:52:07.000Z", "updated": "2014-11-03T03:52:07.000Z", "title": "Detection of knots and a cabling formula for A-polynomials", "authors": [ "Yi Ni", "Xingru Zhang" ], "comment": "29 pages, 5 figures", "categories": [ "math.GT" ], "abstract": "We say that a given knot $J\\subset S^3$ is detected by its knot Floer homology and $A$-polynomial if whenever a knot $K\\subset S^3$ has the same knot Floer homology and the same $A$-polynomial as $J$, then $K=J$. In this paper we show that every torus knot $T(p,q)$ is detected by its knot Floer homology and $A$-polynomial. We also give a one-parameter family of infinitely many hyperbolic knots in $S^3$ each of which is detected by its knot Floer homology and $A$-polynomial. In addition we give a cabling formula for the A-polynomials of cabled knots in $S^3$, which is of independent interest. In particular we give explicitly the A-polynomials of iterated torus knots.", "revisions": [ { "version": "v1", "updated": "2014-11-03T03:52:07.000Z" } ], "analyses": { "subjects": [ "57M25", "57M27" ], "keywords": [ "knot floer homology", "cabling formula", "a-polynomials", "iterated torus knots", "independent interest" ], "note": { "typesetting": "TeX", "pages": 29, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2014arXiv1411.0353N" } } }