Málstofa í stærðfræði Fyrirlesari: Eggert Briem, University of Iceland Titill: Gelfand Theory for Real Banach Algebras Staðsetning: Naustið (Endurmenntun) Tími: Föstudagur 19. Óktober kl. 11.40 Ágrip: A real Banach algebra is a Banach algebra over the reals. We will only consider commutative Banach algebras with unit. An example is the algebra of continuous functions, f , […]
Málstofa í stærðfræði Fyrirlesari: Thomas Selig, University of Iceland Titill: The Abelian sandpile model on permutation graphs Staðsetning: Naustið (Endurmenntun) Tími: Föstudagur 12. Óktober kl. 11.40 Ágrip: A permutation graph is a graph whose edges are given by the inversions of a permutation. The Abelian sandpile model (ASM) is a Markov chain on the set of so-called
Math Phys seminar Fyrirlesari: Tobias Zingg, Nordita Titill: plasmons and physical density-density response from holography Staðsetning: Aðalbygging A-069 Tími: Thursday October 4, at 1.20 -2.20 pm Ágrip: The holographic correspondence can be extended to identify plasmonic excitations in strongly correlated systems. These modes have relevance in the growing field of plasmonics, and play also a crucial role
Málstofa í stærðfræði Fyrirlesari: Þorsteinn Jónsson, University of Guelph Titill: Hnikaaðferðir til að læra dreififöll gagna Staðsetning: V-147 (VR-II) Tími: Mánudagur 2. júlí kl. 10:30 Ágrip: Á þessari málstofu mun ég kynna safn aðferða sem að leyfir okkur að skilgreina tölfræðileg líkön sem lýsa líkindadreifingum sem búa til gögn. Til þessa kynnum við tauganet sem
Málstofa í stærðfræði Fyrirlesari: Thomas Selig, University of Strathclyde Titill: EW-tableaux, permutations and recurrent configurations of the sandpile model on Ferrers graphs. Staðsetning: VRII, V-147 Tími: Miðvikudagur 27. júní kl. 10:30 Ágrip: The Abelian sandpile model (ASM) is a dynamic process on a graph. More specifically, it is a Markov chain on the set of
Málstofa í stærðfræði Fyrirlesari: Delphin Sénizergues, Université Paris 13 Titill: Random metric spaces constructed using a gluing procedure Staðsetning: VRII-V147 Tími: Mánudagur 18. júní kl. 10:50 Ágrip: I will introduce a model of random trees which are constructed by iteratively gluing an infinite number of segments of given length onto each other. This model can
Málstofa í stærðfræði Fyrirlesari: Tony Guttmann, The University of Melbourne Titill: On the number of Av(1324) permutations Staðsetning: V-147 (VR-II) Tími: Mánudagur 28. maí kl. 10:50 Ágrip: We give an improved algorithm for counting the number of 1324-avoiding permutations, resulting in 14 further terms of the generating function, which is now known to length 50.
Math Phys seminar Fyrirlesari: Kevin John Torres Grosvenor, Niels Bohr Institute Titill: Nonrelativistic Naturalness and the quest for Emergent Lorentz Symmetry Staðsetning: V-147 (VR-II) Tími: Þriðjudagur 22. maí kl. 10:30 Ágrip: I will discuss our proposal for a nonrelativistic solution to the Higgs mass hierarchy problem, its dependence on the emergence of various shift symmetries,
Málstofa í stærðfræði Fyrirlesari: Michael Melgaard, University of Sussex Titill: Rigorous mathematical results on nonlinear PDEs arising in Quantum Chemistry Staðsetning: V-147 (VR-II) Tími: Föstudagur 13. apríl kl. 13:30 Ágrip: An introduction to electronic structure models is given and rigorous results are discussed on the existence of solutions (ground states and excited states) to weakly
Math Phys seminar Fyrirlesari: Matteo Baggioli, Autonomous University of Barcelona Titill: Holographic quantum phase transitions: time to get dirty! Staðsetning: HB-5 (Háskólabíó) Tími: Mánudagur 9. apríl kl. 10:50 Ágrip: We study the effects of quenched one-dimensional disorder on the holographic Weyl semimetal quantum phase transition (QPT). We observe the smearing of the sharp QPT linked