Speaker: Lars Martin Sektnan (Chalmers Institute of Technology and University of Gothenburg) Title: Constant scalar curvature Kähler metrics and semistable vector bundles When: Wednesday, November 6, at 10:00 Where: Room 147 in VR-II Abstract: A central question in Kähler geometry is if a Kähler manifold admits a canonical metric, such as a Kähler-Einstein metric or […]
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When: Friday, November 1, at 11:40 Where: Room 156 in VR-II Speaker: Bergur Snorrason (University of Iceland) Title: The Bernstein-Walsh-Siciak theorem Abstract: An important topic in complex analysis is polynomial approximation. We will look at classic results regarding polynomial approximation, culminating in the Bernstein-Walsh-Siciak theorem, which leverages pluripotential theory to relate analytic continuation to polynomial approximations.
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When: Friday, October 25, at 11:40 Where: Room 156 in VR-II Speaker: Bergur Snorrason (University of Iceland) Title: Generalizing Siciak’s product formula Abstract: In pluripotential theory, the Siciak-Zakharyuta extremal functions are well studied. Siciak described how the Siciak-Zakharyuta function associated to a cartesian product relates to the Siciak-Zakharytua functions associated to each of the terms in
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Fyrirlesari: Bergur Snorrason, HÍ Titill: Methods of approximation and their place in pluripotential theory Staðsetning og tími: VR-II 156, föstudaginn 18. oct, kl 11:40 Ágrip: We will discuss several approximation operators and how they can be used to show the regularity of certain extremal functions from pluripotential theory. The tools behind these operators include integral
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Fyrirlesari: Sergey Kitaev frá Háskólanum í Strathclyde Titill: Singleton mesh patterns in multidimensional permutations Staður og stund: VR-II V-147, kl. 10:00 miðvikudaginn 28. ágúst 2024 Ágrip: Permutation patterns is a popular area of research introduced in 1968, but with roots going to the work of Leonhard Euler in 1749. In this talk, I will present
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Fyrirlesari: Gabor Tardos frá Renyi stofnuninni Búdapest Titill: Extremal theory of 0-1 matrices Staðsetning og tími: Askja, N-128, kl. 10:00 mánudaginn 26. ágúst 2024 Ágrip: We say that a a 0-1 matrix A contains another such matrix (pattern) P if P can be obtained from a submatrix of A by possibly changing a few 1
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Fyrirlesari: Peter Mester (Renyi-stofnunin) Tíma- og staðsetning: 11. apríl, kl. 11:40, í Odda O-106 Titill: Monotone couplings Ágrip: Probability theory has an ever widening scope of random objects to study. Shuffling of cards, models which capture phase transition, such as melting of ice, magnetization of iron, and the list could go on, including of course
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Fyrirlesari: Ragnar Sigurðsson (Háskóla Íslands) Stað- og tímasetning: 4. apríl kl. 11:40 í Oddi O-106. Titill: The work of Sigurður Helgason on the Radon transformation. Ágrip: The Radon transformation is the main mathematical tool behind medical morphology. Sigurður Helgason made a major contribution to the theory of the Radon transform which had great impact on
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Fyrirlesari: Ragnar Sigurðsson, Háskóli Íslands Titill: Sigurður Helgason and the application of his work to medical morphology Staðsetning: Oddi O-106, 21. mars, 11:40. Ágrip: At the Christmas meeting of the Icelandic Mathematical Society I gave a memorial lecture on the life and work of Sigurður Helgason. This lecture was in Icelandic and therefore not accessible
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Fyrirlesari: Tarmo Uustalu, Háskólinn í Reykjavík Titill: Skew categorical logic Staðsetning: Oddi O-106, 14. mars, 11:40. Ágrip: This is a talk on categorical logic as pioneered by Joachim Lambek in the late 1960s. We are interested in weak logics of a particular kind – logics defined by categories with some type of skew structure. I
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