activity
20102023
most citedContinuation homomorphism in Rabinowitz Floer homology for symplectic deformations

14 citations · 48 across the 17 of their papers we have counts for

collaborators

18 papers

math.SG2023

Lagrangian cobordism of positroid links

Johan Asplund, Youngjin Bae, Orsola Capovilla-Searle +3

Casals-Gorsky-Gorsky-Simental realized all positroid strata of the complex Grassmannian as augmentation varieties of Legendrians called positroid links. We prove that the partial o…

math.SG2022

Lagrangian fillings for Legendrian links of finite or affine Dynkin type

Byung Hee An, Youngjin Bae, Eunjeong Lee

We prove that there are at least as many exact embedded Lagrangian fillings as seeds for Legendrian links of finite type or affine type $\tilde{\mathsf{D}} \tilde{\m…

math.SG2021★ 7 cited

Lagrangian fillings for Legendrian links of affine type

Byung Hee An, Youngjin Bae, Eunjeong Lee

We prove that there are at least as many exact embedded Lagrangian fillings as seeds for Legendrian links of affine type . We also provide as…

math.SG2021★ 3 cited

Lagrangian fillings for Legendrian links of finite type

Byung Hee An, Youngjin Bae, Eunjeong Lee

We prove that there are at least seeds many exact embedded Lagrangian fillings for Legendrian links of type . We also provide seeds many Lagrangian fillings with cert…

math.CO2020

On the Frame-Stewart Conjecture

Youngjin Bae

The Frame-Stewart conjecture states the least number of moves to solve a generalized Tower of Hanoi problem, of n disks and p pegs. In this paper, we prove a weaker version of the…

math.SG2019★ 6 cited

Augmentations are sheaves for Legendrian graphs

Byung Hee An, Youngjin Bae, Tao Su

In this article, associated to a (bordered) Legendrian graph, we study and show the equivalence between two categorical Legendrian isotopy invariants: the augmentation category, a…

math.SG2019★ 3 cited

Augmentations and ruling polynomials for Legendrian graphs

Byung Hee An, Youngjin Bae, Tao Su

In this article, associated to a (bordered) Legendrian graph, we study and show the equivalence between two Legendrian isotopy invariants: augmentation number via point-counting ov…

math.SG2019★ 1 cited

Ruling invariants for Legendrian graphs

Byung Hee An, Youngjin Bae, Tamás Kálmán

We define ruling invariants for even-valence Legendrian graphs in standard contact three-space. We prove that rulings exist if and only if the DGA of the graph, introduced by the f…

math.SG2019★ 1 cited

Formality of Floer complex of the ideal boundary of hyperbolic knot complement

Youngjin Bae, Seonhwa Kim, Yong-Geun Oh

This is a sequel to the authors' article [BKO](arXiv:1901.02239). We consider a hyperbolic knot in a closed 3-manifold and the cotangent bundle of its complement $M \setmin…

math.SG2019

A wrapped Fukaya category of knot complement

Youngjin Bae, Seonhwa Kim, Yong-Geun Oh

This is the first of a series of two articles where we construct a version of wrapped Fukaya category of the cotangent bundle $T^*(M \s…

math.AG2018

Review on rationality problems of algebraic k-tori

Youngjin Bae

Rationality problems of algebraic k-tori are closely related to rationality problems of the invariant field, also known as Noether's Problem. We describe how a function field of al…

math.SG2018★ 2 cited

A Chekanov-Eliashberg algebra for Legendrian graphs

Byung Hee An, Youngjin Bae

We define a differential graded algebra for Legendrian graphs and tangles in the standard contact Euclidean three space. This invariant is defined combinatorially by using ideas fr…

math.SG2017★ 5 cited

Periodic orbits in virtually contact structures

Youngjin Bae, Kevin Wiegand, Kai Zehmisch

We prove that certain non-exact magnetic Hamiltonian systems on products of closed hyperbolic surfaces and with a potential function of large oscillation admit non-constant contrac…

math.GT2015★ 2 cited

Legendrian singular links and singular connected sums

Byung Hee An, Youngjin Bae, Seonhwa Kim

We study Legendrian singular links up to contact isotopy. Using a special property of the singular points, we define the singular connected sum of Legendrian singular links. This c…

math.SG2014★ 1 cited

An overtwisted disk in a virtual contact structure and the Weinstein conjecture

Youngjin Bae

Hofer proved the Weinstein conjecture for a closed contact 3-manifold with an overtwisted disk. In this article we extend it to the virtual contact structure and provide a new expl…

math.SG2012★ 2 cited

The growth sequence of symplectomorphisms on symplectically hyperbolic manifolds

Youngjin Bae

We study the growth rate of a sequence which measures the uniform norm of the differential under the iterates of maps. On symplectically hyperbolic manifolds, we show that this seq…

math.SG2011★ 1 cited

On magnetic leaf-wise intersections

Youngjin Bae

In this article we introduce the notion of a magnetic leaf-wise intersection point which is a generalization of the leaf-wise intersection point with magnetic effects. We also prov…

math.SG2010★ 14 cited

Continuation homomorphism in Rabinowitz Floer homology for symplectic deformations

Youngjin Bae, Urs Frauenfelder

Will Merry computed Rabinowitz Floer homology above Mane's critical value in terms of loop space homology by establishing an Abbondandolo-Schwarz short exact sequence. The purpose…