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: 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
Málstofa í stærðfræði Fyrirlesari: Anthony Thomas Lyons, Waterford Institute of Technology Titill: The dressing method for the Camassa-Holm equation Staðsetning: HB-5 (Háskólabíó) Tími: Mánudagur 26. mars kl. 10:50 Ágrip: The Camassa-Holm equation is a nonlinear shallow water model which has been the focus of a great deal of mathematical research in hydrodynamics for the past
Málstofa í stærðfræði Fyrirlesari: Phillip Wesolek, Binghamton University Titill: Totally disconnected locally compact groups: from examples to general theory Staðsetning: HB-5 (Háskólabíó) Tími: Mánudagur 5. mars kl. 10:50 Ágrip: Locally compact groups arise in many areas of mathematics as well as in physics. The study of locally compact groups splits into two cases: the connected
Málstofa í stærðfræði
Fyrirlesari: Alexander Wendland, University of Warwick Titill: Facially restricted graph colouring’s Staðsetning: HB-5 (Háskólabíó) Tími: Mánudagur 19. febrúar kl. 10:50 Ágrip: Arguably one of the best known theorems from combinatorics is the four colour theorem, stating that every planar graph can be coloured using at most four colours such that no edge connects two vertices
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Málstofa í stærðfræði Fyrirlesari: Hjörtur Björnsson, University of Iceland Titill: Lyapunov functions for almost sure exponential stability Staðsetning: VRII-158 Tími: Mánudagur 27. nóvember kl. 15:00 Ágrip: We present a generalization of results obtained by X. Mao in his book „Stochastic Differential Equations and Applications“ (2008). When studying what Mao calls „almost sure exponential stability“, essentially
Málstofa í stærðfræði Fyrirlesari: Sigurður Freyr Hafstein, University of Iceland Titill: Dynamical Systems and Lyapunov functions Staðsetning: VRII-158 Tími: Mánudagur 13. nóvember kl. 15:00 Ágrip: We discuss dynamical systems and the theory of Lyapunov functions and complete Lyapunov functions. Further, we discuss several different numerical methods for the computation of Lyapunov functions and the corresponding