Wednesday, July 24, 2024

2024-07-30 / 16:00 ~ 17:00

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For each positive integer q del Pezzo q-secant varieties are subextremal objects, in a natural sense, among q-secant varieties to nondegenerate projective varieties. In this talk we review their definition, properties, and examples, together with those of extremal objects, namely q-secant varieties of minimal degree.

2024-07-26 / 14:00 ~ 15:30

학과 세미나/콜로퀴엄 - 기타: Introduction to Milnor K-theory 4: the norm maps for Milnor K-theory

by 사킵 무쉬타크 샤(Indian Statistical Institute - Bangalore)

Mr. Saqib Mushtaq Shah, a KAIX visiting graduate student from ISI Bangalore who will stay at KAIST for 8 weeks, is going to give a series of weekly talks on the Milnor K-theory from the beginning. It is part of his KAIX summer internship works.

2024-07-31 / 14:00 ~ 16:00

학과 세미나/콜로퀴엄 - 기타: Introduction to comple algebraic geometry and Hodge theory #10

by 김재홍(KAIST)

This is part of an informal seminar series to be given by Mr. Jaehong Kim, who has been studying the book "Hodge theory and Complex Algebraic Geometry Vol 1 by Claire Voisin" for a few months. It will summarize about 70-80% of the book.

2024-07-30 / 16:30 ~ 17:30

IBS-KAIST 세미나 - 이산수학: Parameterized Approximability of F-Deletion Problems

by Euiwoong Lee(University of Michigan)

For a family F of graphs, the F-Deletion Problem asks to remove the minimum number of vertices from a given graph G to ensure that G belongs to F. One of the most common ways to obtain an interesting family F is to fix another family H of graphs and let F be the set of graphs that do not contain any graph H as some notion of a subgraph, including (standard) subgraph, induced subgraph, and minor. This framework captures numerous basic graph problems, including Vertex Cover, Feedback Vertex Set, and Treewidth Deletion, and provides an interesting forum where ideas from approximation and parameterized algorithms influence each other. In this talk, I will give a brief survey on the state of the art on the F-Deletion Problems for the above three notions of subgraphs, and talk about a recent result on Weighted Bond Deletion.

2024-07-24 / 16:00 ~ 18:00

학과 세미나/콜로퀴엄 - 위상수학 세미나:

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Knot homology theories revolutionized the study of knots and links, much like (simplicial or singular) homology theory revolutionized the study of topological spaces. One of the major knot homology theories, Khovanov homology, was introduced by M. Khovanov in 2000 as a "categorification of the Jones polynomial." One notable feature of Khovanov homology is its ability to detect the unknot, a feature not known to be possessed by the Jones polynomial. Recently, it has found notable applications in low-dimensional topology, including the detection of exotic surfaces in the 4-ball. Day 3: Recent developments of Khovanov homology and its applications to low-dimensional topology.

Events for the 취소된 행사 포함