Friday, April 1, 2022

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2022-04-08 / 10:00 ~ 11:00
SAARC 세미나 - SAARC 세미나: 데이터와 수학모델이 공존하는법 인쇄
by 황형주(POSTECH, 수학과)
수학모델은 역사적으로 오래 전부터 다양한 자연현상과 사회현상을 이해하기 위해 고안되어 왔고 순수와 응용에 걸쳐 활발하게 연구되어 온 분야 중 하나이다. 데이터는 4차 산업혁명의 핵심분야인 인공지능과 머신러닝, IoT에 필수 아이템이며 실제 산업이나 일상 속에서 무수히 쏟아져 나오는 핵심 자원이다. 그렇다면 수학모델을 다루는 수학자와 공학자의 시각에서나 데이터를 다루어야 하는 실제 산업현장에서는 이 두 가지가 만났을 때의 시너지를 상상해 볼 수 있을 것이다. 본 강연에서는 데이터와 수학모델이 공존할 수 있을지, 그리고 공존 가능하다면 인공지능분야에서 수학이 풀어야 하는 숙제를, 나아가 다양한 현장의 문제를 해결할 수 있는 중요한 단초를 제공하는 데이터와 수학모델의 공존법을 소개하려고 한다.
2022-04-08 / 10:00 ~ 11:00
SAARC 세미나 - SAARC 세미나: 데이터와 수학모델이 공존하는 법 인쇄
by 황형주(포항공과대학교)
TBA
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)
2022-04-08 / 16:00 ~ 18:00
학과 세미나/콜로퀴엄 - Face the World with Mathematical Mind: 메타버스는 어디로 가는 버스인가요? 인쇄
by 정상원(EST soft)

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.
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