Previous events - Page 254

Geir Ellingsrud, UiO, gives the Seminar in Algebra and Algebraic Geometry:

Modular curves I

Want to get more research done in less time and with less pain?  Are you a graduate student or a researcher? This is something for YOU!

Adam P.W. Sørensen will talk on Nuclear dimension of UCT Kirchberg algebras

Abstract: Nuclear Dimension is a regularity property for C*-algebras that is based on the type of properties currently being taught in Topics in Operator Algebras. We will go over the definition and motivation and discuss known results.

Abram Krislock, UiO

During Supersymmetry phenomenology research, involving simulations of the Large Hadron Collider experiments, a certain mistrust of data analysis using common histograms arose. Someone once said, "Change the bins and try the fit again..." A quest began to eliminate the bins entirely. After a recent study, it was clear that a deeper understanding of statistics was needed to complete this quest. A new probability calculus was discovered, leading to an interesting new data smoothing technique.

This week we will discuss a paper by Lamichhaney et al. (Nature, 2015) on the genomic basis of beak divergence in Darwin's finches.

http://www.nature.com/nature/journal/v518/n7539/full/nature14181.html

Please note that the meeting will take place on wednesday the 25^th and not thursday, at 12 as usual!

Each year in spring, research institutes and universities around the world invite high-school students for a day-long programme to experience life at the forefront of basic research. These International Masterclasses give students the opportunity to be particle physicists for a day by analysing real data from the Large Hadron Collider, or LHC, at CERN. 

Kasper Christensen ( Nofima, Ås and  Aarhus university ) gives a seminar in room 107, 1st floor N.H. Abels House at 14:15 February 24th:  Mining for new product ideas.

Welcome to the GeoHyd Lunch Seminar on Friday 20 February @12:15 in AUD 1 in the Geology building.

Master i farmasi Hilde Marie Erøy Edvardsen ved Farmasøytisk instiutt vil forsvare sin avhandling for graden ph.d: Using biological samples to study the use of alcohol and drugs in cohorts.

This week, between the trial lecture and lunch, we'll be discussing a not-so-box-fresh paper from 2012 in Proceedings B by Smith, Lloyd and McGowan titled Phanerozoic marine biodiversity: rock record modelling provides an independent test of large-scale trends

Essentially it compares subsampling (Alroy's SQS) and a much applied bias-correction method to try to reconstruct diversity from fossil data.

Bring a friend and see you Friday.

IBV Department and CEES Extra seminar by Darren E. Irwin from Beaty Biodiversity Museum & University of British Columbia

Carsten Lütken, UiO

The new states of matter and concomitant quantum critical phenomena revealed by the quantum Hall effect appear to be accompanied by an emergent modular symmetry. The extreme rigidity of this infinite symmetry makes it easy to falsify, but two decades of experiments have failed to do so, and the predicted location of quantum critical points is in accurate agreement with experiments.

The symmetry severely constrains the effective low energy physics of 10¹⁰ charges in two dirty dimensions. A toroidal σ­‐model gives a critical exponent that is in close agreement with numerical simulations. A double scaling law uncovered in the data suggests that the wave­‐function may be multi‐fractal.

The modular analysis can be extended to “relativistic” group IV materials like graphene, silicene, germanene and stanene, and where reliable data are available there appears to be agreement.

C.A. Lütken, Introduction to the role of modular symmetries in graphene and other 2-­‐dimensional materials, Contemp. Phys. (2014), http://dx.doi.org/10.1080/00107514.2014.949445

C.A. Lütken, G.G. Ross, Quantum critical Hall exponents, Phys. Lett. A 378 (2014) 262–265, http://dx.doi.org/10.1016/j.physleta.2013.11.001

Programme

 Asbjørn Vøllestad, CEES

CEES Extra seminar by David Righton & Julian Metcalfe from Cefas.

This LLT will be held as a CEES Extra seminar by David Righton & Julian Metcalfe from Cefa

Welcome to the GeoHyd Lunch Seminar on Friday 13 February @12:15 in AUD 1 in the Geology building.

Stephanie C. Werner, Centre of Earth Evolution and Dynamics, Department of Geosciences, UiO

Atanas Iliev, Seoul National University, gives the Seminar in Algebra and Algebraic Geometry:

Fano manifolds - old and new

Speakers: Michaela Jarkovská, Staffan Müller-Wille, Stig Omholt and Aoife McLysaght

Makoto Yamashita, Ochanomizu University, will give a talk with title: Drinfeld center and representation theory for monoidal categories

Abstract: Motivated by the recently found relation between central completely positive multipliers and the spherical unitary representations of the Drinfeld double for discrete quantum groups, we construct and analyze the representations of fusion algebra of rigid C*-tensor category from the unitary half-braidings. Through the correspondence of Drinfeld center and the generalized Longo-Rehren construction in subfactor theory, these representations are also related to Popa’s theory of correspondences and subfactors. This talk is based on joint work with Sergey Neshveyev.

Håvard Rue ( Dept. of math., NTNU) gives a seminar in room 107, 1st floor N.H. Abels House at 14:15 February 10th: Penalising model component complexity: A principled practical approach to constructing priors

Late lunch talk by Adriana Hernandez-Aguilar and Trond Reitan.