Thursday, March 31, 2022

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2022-04-01 / 16:30 ~ 18:00
학과 세미나/콜로퀴엄 - 박사논문심사: 대수 곡선 상의 차수가 2인 벡터 번들의 대칭 거듭제곱의 안정성 인쇄
by 김정섭(KAIST)
심사위원장: 이용남, 심사위원 : 곽시종, 백상훈, 최영욱(영남대 수학교육과), 최인송(건국대 수학과)
2022-04-01 / 10:30 ~ 11:45
학과 세미나/콜로퀴엄 - 대수기하학: An introductory guide to mixed Hodge modules #8 인쇄
by 정승조(전북대학교)
Morihiko Saito's theory of mixed Hodge modules is a far generalisation of classical Hodge theory, which is based on the theory of perverse sheaves, D-modules, variations of Hodge structures. One can think of mixed Hodge modules as a certain class of D-modules with Hodge structures. Naturally they are accompanied by perverse sheaves via the Riemann–Hilbert correspondence. This guide consists of about 8 talks, which may cover: review of classical Hodge theory, D-modules and filtered D-modules, nearby and vanishing cycles, etc. The main goal is to understand the notion of mixed Hodge modules and to explain two important theorems: the structure theorem and the direct image theorem. If time permits, we discuss recent applications of the theory in algebraic geometry.
2022-04-07 / 12:25 ~ 12:50
대학원생 세미나 - 대학원생 세미나: Mapping class groups and Topological entropy 인쇄
by 백주헌(KAIST)
Let $S := S_{g, n}$ be a surface of genus $g$ with $n$ punctures. We collect all isotopy classes of homeomorphisms of $S$, call it as a "Mapping class group" and denote it as $Mod(S)$ or $MCG(S)$. In this talk I will introduce (1) classification of elements in $Mod(S)$, (2) Actions on some spaces such as moduli space or Teichmuller space, (3) Topological entropy followed by my recent work. This is a joint work with my advisor Harry Hyungryul Baik, Changsub Kim, and Philippe Tranchida.
2022-04-07 / 12:00 ~ 12:25
대학원생 세미나 - 대학원생 세미나: The time-asymptotic stability of composite wave for the 1-d compressible barotropic Navier-Stokes Equation 인쇄
by 이호빈(KAIST)
We prove the time-asymptotic stability of composite wave consisting of superposition of a viscous shock and a rarefaction for the 1-dimensional compressible barotropic Navier Stokes equations. This problem first mentioned in 1986 by Matsumura and Nishihara. This problem has unsolved between 1986 and 2021. The main difficulty is due to the incompatibility of the standard anti-derivative method, often used to study this area. In 2021, MOON-JIN KANG, ALEXIS F. VASSEUR, and YI WANG solve this problem using ground-breaking technic. But this has a little limits which make generalization to difficult. So, HO-BIN LEE and SUNG-HO HAN little change the proof.
2022-04-07 / 11:00 ~ 12:00
IBS-KAIST 세미나 - 수리생물학: 인쇄
by ()
A macroscopic theory for cellular states with steady-growth is presented, based on consistency between cellular growth and molecular replication, together with robustness of phenotypes against perturbations. Adaptive changes in high-dimensional phenotypes are shown to be restricted within a low-dimensional slow manifold, from which a macroscopic law for cellular states is derived, as is confirmed by adaptation experiments of bacteria under stress. The theory is extended to phenotypic evolution, leading to proportionality between phenotypic responses against genetic evolution and by environmental adaptation, which explains the evolutionary fluctuation-response relationship previously uncovered.
2022-03-31 / 11:00 ~ 12:00
IBS-KAIST 세미나 - 수리생물학: 인쇄
by ()
We will discuss hormone circuits and their dynamics using new models that take into account timescales of weeks due to growth of the hormone glands. This explains some mysteries in diabetes and autoimmune disease.
Events for the 취소된 행사 포함 모두인쇄
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