Gil Kalai, The Cascade Conjecture and other Helly-type Problems
Zoom ID: 868 7549 9085For a set $X$ of points $x(1)$, $x(2)$, $\ldots$, $x(n)$ in some real vector space $V$ we denote by $T(X,r)$ the set of points in $X$ that belong to the …
7 events found.
Colloquium
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O-joung Kwon (권오정), Graph minor theory and beyond
Room 1501, Bldg. E6-1, KAISTOne of the important work in graph theory is the graph minor theory developed by Robertson and Seymour in 1980-2010. This provides a complete description of the class of graphs …
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Xavier Goaoc, Order types and their symmetries
Room 1501, Bldg. E6-1, KAISTOrder types are a combinatorial classification of finite point sets used in discrete and computational geometry. This talk will give an introduction to these objects and their analogue for the …
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Dabeen Lee (이다빈), Non-smooth and Hölder-smooth submodular optimization
Room 1501, Bldg. E6-1, KAISTWe study the problem of maximizing a continuous DR-submodular function that is not necessarily smooth. We prove that the continuous greedy algorithm achieves an guarantee when the function is monotone …
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Rob Morris, Ramsey theory: searching for order in chaos
Room 1501, Bldg. E6-1, KAISTIn many different areas of mathematics (such as number theory, discrete geometry, and combinatorics), one is often presented with a large "unstructured" object, and asked to find a smaller "structured" …
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Maria Chudnovsky, Induced subgraphs and tree decompositions
Room 1501, Bldg. E6-1, KAISTTree decompositions are a powerful tool in both structural graph theory and graph algorithms. Many hard problems become tractable if the input graph is known to have a tree decomposition …
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William Cook, The Traveling Salesman Problem: Amazon Deliveries, Pub Walks, and Astro Tours
Room 1501, Bldg. E2-2, KAISTAmazon drivers hit the road every day, each taking a Prime van in a traveling salesman problem tour through 150 or more customer stops. But even a whisper of the …