Braid loops with infinite monodromy on the Legendrian contact DGA
Braid loops with infinite monodromy on the Legendrian contact DGA
复制标题
Legendrian 接触 DGA 上具有无限单一性的编织环
DOI:
10.1112/topo.12264
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发表时间:
2022
影响因子:
1.1
通讯作者:
Ng, Lenhard
中科院分区:
文献类型:
--
作者:
Casals, Roger;Ng, Lenhard
We present the first examples of elements in the fundamental group of the space of Legendrian links in (S3,ξst)$(\mathbb {S}^3,\xi _{\text{st}})$ whose action on the Legendrian contact DGA is of infinite order. This allows us to construct the first families of Legendrian links that can be shown to admit infinitely many Lagrangian fillings by Floer‐theoretic techniques. These new families include the first‐known Legendrian links with infinitely many fillings that are not rainbow closures of positive braids, and the smallest Legendrian link with infinitely many fillings known to date. We discuss how to use our examples to construct other links with infinitely many fillings, and in particular give the first Floer‐theoretic proof that Legendrian (n,m)$(n,m)$ torus links have infinitely many Lagrangian fillings if n⩾3,m⩾6$n\geqslant 3,m\geqslant 6$ or (n,m)=(4,4),(4,5)$(n,m)=(4,4),(4,5)$. In addition, for any given higher genus, we construct a Weinstein 4‐manifold homotopic to the 2‐sphere whose wrapped Fukaya category can distinguish infinitely many exact closed Lagrangian surfaces of that genus in the same smooth isotopy class, but distinct Hamiltonian isotopy classes. A key technical ingredient behind our results is a new combinatorial formula for decomposable cobordism maps between Legendrian contact DGAs with integer (group ring) coefficients.
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DOI:
10.2140/pjm.2017.289.417
发表时间:
2016
期刊:
arXiv: Symplectic Geometry
影响因子:
--
作者:
Yu Pan
通讯作者:
Yu Pan
影响因子:
3.1
作者:
Lenhard L. Ng
通讯作者:
Lenhard L. Ng
影响因子:
1.1
作者:
Cecilia Karlsson
通讯作者:
Cecilia Karlsson
影响因子:
1.8
作者:
Casals, Roger
通讯作者:
Casals, Roger
DOI:
--
发表时间:
2008
期刊:
J.Symp.Geom (掲載確定)
影响因子:
--
作者:
Kalman;Tamas
通讯作者:
Tamas