Tidlegare gjesteforelesninger og seminarer - Side 2

Tid og stad: , NHA B1120

I will talk about how one can relate intersection theories of Hilbert schemes of points and Fulton-MacPherson compactifications.

Tid og stad: , NHA 723 and Online
Tid og stad: , Erling Svedrups plass and Zoom https://uio.zoom.us/j/66503159220?pwd=alhPVFpHNUxVUTNoeHhIcVFtUWx4UT09
In this talk I will cover the recent advances in the theory of power law distributions, in particular the role of Markov modulation and random stopping emphasized by Beare and Toda (2022), which builds on Nakagawa (2007)’s Tauberian theorem. Applications include the emergence of Zipf’s law in Japanese cities and the spread of COVID-19. I will also present open mathematical problems.
 
• Beare, Brendan K., and Alexis Akira Toda. "Determination of Pareto exponents in economic models driven by Markov multiplicative processes." Econometrica 90.4 (2022): 1811-1833.
• Nakagawa, Kenji. "Application of Tauberian theorem to the exponential decay of the tail probability of a random variable." IEEE Transactions on Information Theory 53.9 (2007): 3239-3249.
• Beare, Brendan K., and Alexis Akira Toda. "On the emergence of a power law in the distribution of COVID-19 cases." Physica D: Nonlinear Phenomena 412 (2020): 132649.
 
Tid og stad: , NHA 723 and Online
Tid og stad: , NHA 107

C*-algebra seminar by Eduard Vilalta (Chalmers University of Technology / University of Gothenburg)

Tid og stad: , Nucleus, Bikuben, Kristine Bonnevies hus & Zoom

At this seminar there will be three 30 minute lectures by Peter Hudson, Ottar N. Bjørnstad, and Andy Dobson. Organized by CEES & Centre for Pandemics and One-Health Research (P1H). The seminar is open for all.

By Sonia Altizer, Odum School of Ecology, University of Georgia, Athens GA, USA. The seminar is open for all.

Tid:

QOMBINE seminar talk by Franz Fuchs (University of Oslo)

Tid og stad: , Auditorium 3, ZEB building

Prof. Dr. Christiane Helling, director of Space Research Institute, Graz, Austria.

Tid og stad: , 3508 Kristine Bonnevie, Blindern

By Sean Stankowski, The University of Sussex, UK 

Tid og stad: , Peisestua (room 304), Svein Rosselands Hus

Arpita Misra, Doctoral student at Jagiellonian University, Kraków, Poland.

Tid og stad: , NHA B1120
Donaldson-Thomas invariants "virtually" count curves in a given threefold. They factor into two parts: a part which only counts curves, and a degree 0 part, which counts 0-dimensional subschemes. The degree 0 part can be fully computed with a closed formula by relating them to combinatorial counting of plane partitions, which are certain configurations of boxes in 3D space. DT theory comes in various refinements. Nekrasov's formula refines the relation to counts of plane partitions to equivariant K-theoretic DT theory and gives a closed formula for refined degree 0 DT invariants.
 
Degree 0 DT invariants of orbifolds are related to counts of colored plane partitions, where the boxes are colored in a way determined by the orbifold structure. This allows the computation of closed formulas for some orbifolds. We refine these closed formulas to equivariant K-theoretic DT theory by modifying the techniques used in Okounkov's proof of Nekrasov's formula to work for orbifolds. We will explain these techniques in the case of schemes and describe some of the modifications to make them work for orbifolds.
Tid og stad: , 3508 Kristine Bonnevie, Blindern

By Thorsten Reusch, from GEOMAR Kiel, Germany

Tid og stad: , Kristine Bonnevies Hus, Sanger (3213)

Welcome to the next seminar of the semester, where we will host a talk by Oda Hovet (PhD candidate, Progida Group, Paulsen Group, EVOGENE, IBV).

Tid og stad: , 3215 Greenhouse, Blindern

By Assistant Professor Dr. Emiliano Trucchi from the University of Ancona, Italy

Tid og stad: , Peisestua (room 304), Svein Rosselands Hus

Rubinur Khatun, Cosmology and Extragalactic Astronomy research group, Institute of Theoretical Astrophysics, University of Oslo.

Tid og stad: , NHA 723 and Online
Tid og stad: , Realfagsbiblioteket, Vilhelm Bjerknes' hus

Til minne om Norges fremste astrofysiker og grunnlegger av Institutt for teoretisk astrofysikk, professor Svein Rosseland (1894 – 1985), arrangerer Institutt for teoretisk astrofysikk hvert år en Rosselandforelesning.

Tid og stad: , Erling Sverdrups plass, Niels Henrik Abels hus, 8th floor
Climate and weather can affect disease prevalence in different ways. For instance, humidity and temperature affect the life cycles of mosquitos which can greatly influence the prevalence of vector-borne diseases like malaria and dengue. Modelling this relationship is very important, both in the short term for outbreak preparedness, and in the long term, for health systems to adapt to the changing climate. However, this modelling is difficult because of low amounts of quality health data, complexities in spatial-temporal modelling, and the many different domains (vector biology, climate, epidemiology).
In this talk I will present our work on building a framework both for developing modularized and adaptable climate-health models, and for rigorously evaluating the utility of these models.
Tid og stad: , Meeting rooms K08-K09, Svein Rosselands hus

Eduard Kontar, Professor at School of Physics and Astronomy, University of Glasgow, UK.

Tid og stad: , 3215 Greenhouse, Blindern

By Rosemary Gillespie and George Roderick from the University of California Berkeley, USA

Tid og stad: , 3215 Greenhouse, Blindern

By Lucy Gilbert, University of Glasgow, UK

Tid og stad: , NHA B1120

Abstract: Although tropical vector bundles have been introduced by Allermann ten years ago, very little has been said about their structure and their relationship to vector bundles on algebraic varieties. I will present recent work with Martin Ulirsch and Dmitry Zakharov that changes exactly this in the case of curves: we prove analogues of the Weil-Riemann-Roch theorem and the Narasimhan-Seshadri correspondence for tropical vector bundles on tropical curves. We also show that the non-Archimedean skeleton of the moduli space of semistable vector bundles on a Tate curve is isomorphic to a certain component of the moduli space of semistable tropical vector bundles on its dual metric graph. Time permitting I will also report on work with Inder Kaur, Martin Ulirsch, and Annette Werner and explain some of the difficulties that arise when generalizing beyond the case of curves to Abelian varieties of arbitrary dimension.

Tid og stad: , Origo

Dr. Anne Schad Bergsaker, Dr. Jon Kerr Nilsen, and Dr. Maiken Pedersen, USIT, UiO.