Málstofa: Brigitte Servatius

13. október, 11:40 í N-130. Fyrirlesari: Brigitte Servatius (Worcester Polytechnic Institute) Titill:  Random regular graphs and their rigidity properties in the plane. Ágrip: We start with some elementary examples of random regular graphs and an algorithm to generate them. We explain how graph theoretic properties such as regularity, planarity, and transitivity influence planar rigidity and

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Málstofa: Einar Bjarki Gunnarsson

October 6, 11:40 Room N-130 Speaker: Ejnar Bjarki Gunnarsson (University of Iceland) Title: The site frequency spectrum of a neutrally evolving tumor Abstract: The site frequency spectrum (SFS) is a popular summary statistic of genomic data, recording the frequencies of mutations within a given population. While the SFS of a constant-sized population undergoing neutral mutations

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Málstofa: Marton Posfai

Næsta málstofa verður þriðjudaginn 18. apríl kl 13:20 í VHV-023 (ath. ný staðsetning). Fyrirlesari er Marton Posfai, Central European University, Vienna. Titill fyrirlestrarins er Physical networks. Ágrip: Physical networks — networks with nodes and links that are physical objects embedded in space — are shaped by constraints such as volume exclusion, the cost of building

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Málstofa: Þórður Jónsson

Níunda málstofa haustsins verður föstudaginn 4. nóvember ​​​​kl 10:30 í Naustinu, húsi Endurmenntunar.  Fyrirlesari er Þórður Jónsson, Háskóla Íslands.  Titill hans er Quantum walk on a comb Abstract:  We give a short introduction to continuous time quantum walk on graphs, discuss simple examples and compare with the usual random walk.  Then we study quantum walk

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Málstofa: Hermann Þórisson

Áttunda málstofa haustsins verður föstudaginn 28. október ​​​​kl 10:30 í Naustinu, húsi Endurmenntunar.  Fyrirlesari er Hermann Þórisson, Háskóla Íslands.  Titill hans er Forward and backward limits. Abstract: The main limit theorem of (time-homogeneous) Markov chains says that (under minimal conditions) a Markov chain tends to stationarity (equilibrium) as time tends to infinity. In 1938 Wolfgang Doeblin (1915-1940) presented a brilliant method

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Málstofa: Sigurður Örn Stefánsson

Fjórðja málstofa haustsins verður föstudaginn 7. október ​​​​kl 10:30 í Naustinu, húsi Endurmenntunar.  Fyrirlesari er Sigurður Örn Stefánsson, Háskóla Íslands. Titill hans er Randomly decorated random trees Abstract: Many combinatorial objects may be decomposed in a natural way into an underlying tree whose vertices are identified with structures which we will call decorations. We refer to such objects as decorated trees.

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Sigurður Örn Stefánsson

Málstofa í stærðfræði Fyrirlesari: Sigurður Örn Stefánsson, Háskóla Íslands Titill: Random maps with large faces Staðsetning: Tg-227 í Tæknigarði. Tímasetning: Fimmtudaginn 31. mars 2022, kl. 10:30. Ágrip: There has been an immense progress in the understanding of random planar maps in the last two decades. An important breakthrough was the independent proofs of Le Gall

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