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A description of Rasmussen’s invariant from the divisibility of Lee’s canonical class
Journal of Knot Theory and Its Ramifications ( IF 0.3 ) Pub Date : 2020-06-03 , DOI: 10.1142/s0218216520500376
Taketo Sano 1
Affiliation  

We give a description of Rasmussen’s [Formula: see text]-invariant from the divisibility of Lee’s canonical class. More precisely, given any link diagram [Formula: see text], for any choice of an integral domain [Formula: see text] and a non-zero, non-invertible element [Formula: see text], we define the [Formula: see text]-divisibility [Formula: see text] of Lee’s canonical class of [Formula: see text], and prove that a combination of [Formula: see text] and some elementary properties of [Formula: see text] yields a link invariant [Formula: see text]. Each [Formula: see text] possesses properties similar to [Formula: see text], which in particular reproves the Milnor conjecture. If we restrict to knots and take [Formula: see text], then our invariant coincides with [Formula: see text].

中文翻译:

从李的规范类的可分性描述拉斯穆森的不变量

我们描述了 Rasmussen 的 [Formula: see text]-不变量来自 Lee 的规范类的可分性。更准确地说,给定任何链接图 [公式:参见文本],对于整数域 [公式:参见文本] 和非零、不可逆元素 [公式:参见文本] 的任何选择,我们定义 [公式: see text]-divisibility [Formula: see text] Lee 的规范类 [Formula: see text],并证明 [Formula: see text] 和 [Formula: see text] 的一些基本性质的组合产生链接不变量[公式:见正文]。每一个【公式:见正文】都具有与【公式:见正文】相似的性质,特别是对米尔诺猜想的反驳。如果我们限制为节并采用[公式:参见文本],那么我们的不变量与[公式:参见文本]一致。
更新日期:2020-06-03
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