Málstofa í stærðfræði Fyrirlesari: Eggert Briem Titill: Real Banach algebras and norms on real spaces. Staðsetning: V-157, VRII. Tími: Föstudagur 8. apríl kl. 13:20. Ágrip: A commutative complex unital Banach algebra can be represented as a space of continuous functions on a compact Hausdorff space via the Gelfand transform. However, in general it is not […]
Málstofa í stærðfræði Fyrirlesari: Jakob Björnberg Titill: Random permutations and quantum Heisenberg models Staðsetning: V-157, VRII. Tími: Föstudagur 1. apríl kl. 13:20. Ágrip: The interchange process (or random-transposition random walk) is a model for random permutations which is closely related to a model from quantum statistical physics (the ferromagnetic Heisenberg model). In fact, certain ‘cycle-weighted’
Málstofa í stærðfræði Fyrirlesari: François David Titill: Planar maps, circle patterns and 2D gravity Staðsetning: V-157, VRII. Tími: Föstudagur 11. mars kl. 13:20. Ágrip: I present a model of random planar triangulations (planar maps) based on circle patterns and discuss its properties. It exemplifies the relations between discrete random geometries in the plane, conformally invariant
Málstofa í stærðfræði Fyrirlesari: Matin Mojaza Titill: Soft dilatons: In gravity and from conformal field theory Staðsetning: V-148, VRII. Tími: Föstudagur 19. febrúar kl. 11:00. Ágrip: In this talk I will discuss the soft factorizing properties of two seemingly different particles, which are in the literature both referred to as dilatons; i.e. the dilaton in
Benedikt Steinar Magnússon (12/02/16)
Math Colloquium Speaker: Benedikt Steinar Magnússon Title: Pluripotential theory in several complex variables explained by the Dirichlet problem in the plane Location: V-157, VRII. Time: Friday, February 12 at 13:20. Abstract: The goal is to give a brief introduction to pluripotential theory in several complex variables using the Dirichlet problem in the plane as a
Benedikt Steinar Magnússon (12/02/16) Read More »
Málstofa í stærðfræði Fyrirlesari: Anders Claesson Titill: Interval orders via combinatorial species and ballot matrices Staðsetning: V-157, VRII. Tími: Föstudagur 5. febrúar kl. 13:20. Ágrip: We give a brief introduction to (some aspects of) combinatorial species. Using this framework we introduce ballot matrices and present a subset of them that is in bijection with labeled
Málstofa í stærðfræði – BS verkefni Fyrirlesari: Jón Áskell Þorbjarnarson. Titill: Dreififöll og grunnlausnir á hlutafleiðujöfnum Staðsetning: V02-157 , VRII Tími: Föstudagur 29. janúar, klukkan 15:00-16:00. Ágrip: Við fjöllum um dreififöll, sem eru alhæfingar á heildanlegum föllum á Rn. Við skilgreinum þau sem samfelld línuleg felli á rúmi þjálra falla með þjappaða stoð. Dreififöll hafa
Málstofa í stærðfræði Fyrirlesari: Timo Alho Titill: Coordinate-free integrals in Geometric Calculus Staðsetning: V-157, VRII. Tími: Föstudagur 6. nóvember og föstudagur 13. nóvember, klukkan 15:00-16:00. Ágrip: Using the apparatus of geometric algebra and geometric calculus, we introduce a method for evaluating integrals in R^n and its submanifolds without introducing coordinates. The method is based on
Málstofa í stærðfræði Fyrirlesari: Eric Laenen Titill: The Eikonal Approximation Staðsetning: V-156, VRII. Tími: Miðvikudagur 28. október, klukkan 15:00-16:00. Ágrip: In LHC processes, when low-energy gluons are radiated, the so-called eikonal approximation may be used. In this talk I review its origin, how it works, and show some insights that emerge from it. I then
Málstofa í stærðfræði Fyrirlesari: Guenter Last Titill: Second order properties of the Boolean model and the Gilbert graph Staðsetning: V-157, VRII. Tími: Föstudagur 30. október, klukkan 15:00-16:00. Ágrip: The Boolean model is a fundamental model of stochastic geometry and continuum percolation. It is a random subset of Euclidean space that arises as the union of