Alexander Clifton, Ramsey Theory for Diffsequences
Room B332 IBS (기초과학연구원)Van der Waerden's theorem states that any coloring of
10 events found.
Santiago Guzmán-Pro, Local expressions of graphs classes
Zoom ID: 869 4632 6610 (ibsdimag)A common technique to characterize hereditary graph classes is to exhibit their minimal obstructions. Sometimes, the set of minimal obstructions might be infinite, or too complicated to describe. For instance, for any
Zixiang Xu (徐子翔), On the degenerate Turán problems
Room B332 IBS (기초과학연구원)For a graph
Konstantin Tikhomirov, A remark on the Ramsey number of the hypercube
Zoom ID: 870 0312 9412 (ibsecopro) [CLOSED]A well-known conjecture of Burr and Erdős asserts that the Ramsey number
Nika Salia, Exact results for generalized extremal problems forbidding an even cycle
Room B332 IBS (기초과학연구원)We determine the maximum number of copies of
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 projective plane, with an emphasis on their symmetry groups. This is joint work with Emo Welzl.
Florent Koechlin, Uniform random expressions lack expressivity
Room B332 IBS (기초과학연구원)In computer science, random expressions are commonly used to analyze algorithms, either to study their average complexity, or to generate benchmarks to test them experimentally. In general, these approaches only consider the expressions as purely syntactic trees, and completely ignore their semantics — i.e. the mathematical object represented by the expression. However, two different expressions …
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 and Hölder-smooth, meaning that it admits a Hölder-continuous gradient. For functions that are non-differentiable or non-smooth, we propose a variant of the mirror-prox algorithm that …
Jungho Ahn (안정호), Unified almost linear kernels for generalized covering and packing problems on nowhere dense classes
Room B332 IBS (기초과학연구원)Let
Hugo Jacob, On the parameterized complexity of computing tree-partitions
Zoom ID: 869 4632 6610 (ibsdimag)Following some recent FPT algorithms parameterized by the width of a given tree-partition due to Bodlaender, Cornelissen, and van der Wegen, we consider the parameterized problem of computing a decomposition. We prove that computing an optimal tree-partition is XALP-complete, which is likely to exclude FPT algorithms. However, we prove that computing a tree-partition of approximate …