조회 수 603 추천 수 0 댓글 0
?

단축키

Prev이전 문서

Next다음 문서

크게 작게 위로 아래로 댓글로 가기 인쇄
?

단축키

Prev이전 문서

Next다음 문서

크게 작게 위로 아래로 댓글로 가기 인쇄
Extra Form
일정시작 2021-06-25
일정종료 2021-06-25
배경색상 #036eb7

Date: 6월24일 금요일, 2021년

Place: 129동


Title: Closed orbits and Beatty sequences

Speaker: 강정수 교수

Abstract:

A long-standing open question in Hamiltonian dynamics asks whether every strictly convex hypersurface in R^{2n} carries at least n closed orbits. This was answered affirmatively in the non-degenerate case by Long and Zhu in 2002. The aim of this talk is to outline their proof and to highlight its connection to partitioning the set positive integers.


 

Title: On the $\tilde{H}$-cobordism group of $S^1 \times S^2$'s

Speaker: 이동수 박사

Abstract:

Kawauchi defined a group structure on the set of homology S1 × S2’s under an equivalence relation called $\tidle{H}$-cobordism. This group receives a homomorphism from the knot concordance group, given by the operation of zero-surgery. In this talk, we review knot concordance invariants derived from knot Floer complex, and apply them to show that the kernel of the zero-surgery homomorphism contains an infinite rank subgroup generated by topologically slice knots.

 

 

 

 


List of Articles
번호 제목 글쓴이 날짜 조회 수
공지 QSMS Mailing List Registration qsms 2021.09.09 71
33 [QSMS Monthly Seminar] A survey on symplectic fillings and Milnor fibers of a normal complex surface singularity qsms 2021.03.26 617
32 [Seminar 2021.04.02] Quantum affine analog of Kazhdan-Lusztig positivity for non-simply laced types via simply laced types qsms 2021.03.30 7077
31 [Seminar 2021.04.29] A realization of type A finite $W$-(super)algebra in terms of (super) Yangian qsms 2021.04.09 1235
30 [Seminar 2021.04.23] Quiver Hecke algebras and unipotent quantum coordinate ring qsms 2021.04.09 594
29 [Seminar 05.14, 05.21, 05.28, 06.04] Introduction to derived categories qsms 2021.04.16 15478
28 [Seminar 2021.04.02] CM congruence and the derivatives of p-adic L-functions for imaginary quadratic fields qsms 2021.04.19 519
27 [Seminar 2021.04.16] Hecke system of harmonic Maass functions and applications to modular curves of higher genera qsms 2021.04.19 4637
26 [2021 KMS Spring Meeting] Related talks qsms 2021.04.30 3635
25 [Seminar 2021.05.06] Arithmetic properties of weakly holomorphic modular functions of arbitrary level qsms 2021.05.04 301
24 [Seminar 2021.05.11] Knotted embeddings qsms 2021.05.06 343
23 [Seminar 2021.05.12] Equivariant symplectic homology qsms 2021.05.06 224
22 [QSMS Monthly Seminar] Recoverable lattices qsms 2021.05.07 266
21 [Seminar 2021.05.14] On some results about non-holomorphic Jacobi forms qsms 2021.05.11 393
20 [Seminar 2021.05.13] Convergence of harmonic maps via regular nodes qsms 2021.05.12 271
19 [Seminar 2021.05.18] The coherent-constructible correspondence for toric projective bundles qsms 2021.05.17 378
18 [Seminar 2021.05.28] Ramanujan continued fractions of order sixteen qsms 2021.05.21 637
17 [Seminar 2021.06.15, 06.22] Cluster algebras with a view toward the Jacobian conjecture qsms 2021.05.28 710
16 [QSMS Monthly Seminar] Symmetric functions and super duality qsms 2021.05.28 600
15 [Seminar 2021.06.11] The pentagonal theorem of sixty-three and generalizations of Cauchy's lemma qsms 2021.05.28 559
» [QSMS Monthly Seminar] Closed orbits and Beatty sequences qsms 2021.06.24 603
Board Pagination Prev 1 2 3 Next
/ 3