Previous events - Page 61

Note the non-standard time! 

In the first part of the talk, I will give an introductory talk to o-minimality, giving the definitions and some of intuition through understanding which Lie groups are amenable to being understood in o-minimal contexts. 

In the second part I will state the two theorems which have had the most important applications to algebra and give some intuition of how (at least one of them) has been used.

Dr Kevin Burke is an Associate Professor of Statistics at the University of Limerick (UL) with research interests in flexible statistical modelling, penalised regression, neural networks, random effects, survival/reliability analysis, and industrial modelling. See https://kevinburke.ie/ for more details. Previously he was Director of UL's Industrial Mathematics Unit (from 2016 - 2020), and a Science Foundation Ireland Public Service Fellow with the Food Safety Authority of Ireland (2020 - 2021). He is the Vice President of the Irish Statistical Association, and the Chair of the International Workshop on Statistical Modelling (IWSM) 2025. IWSM 2025 will be hosted in Limerick City, Ireland, from Sunday 13th July to Friday 18th July 2025; the call for papers is currently open             (https://iwsm2025.ie/call-for-papers).

Tor Ole Odden will hold a seminar about how Artificial Intelligence and human cognition are related. 

Programming with Python is essential in many fields, but navigating packages, environments, and Integrated Development Environments (IDEs) can be challenging. This workshop is designed for those starting with Python or struggling with these aspects. It simplifies the process, providing practical guidance and hands-on activities to help participants confidently manage their Python setup and workflow.

Wasja is a postdoctoral researcher at NORSAR research facility. 

Hylleraas seminar, hosted in Oslo

Doctoral candidate Slađana Radinović at the Institute of Theoretical Astrophysics, Faculty of Mathematics and Natural Sciences, is defending the thesis "Constraining cosmology and gravity with the void-galaxy cross-correlation function" for the degree of Philosophiae Doctor.

PhD candidate Anne Greulich at the Department of Biosciences, Faculty of Mathematics and Natural Sciences, is defending the thesis 'Arabidopsis thaliana short tandem repeat variability in adaptive processes and protein function' for the degree of PhD.

Doctoral candidate Seyed Mojtaba Karbasi at the Department of Informatics, Faculty of Mathematics and Natural Sciences, is defending the thesis ZRob; Exploring Rhythmic Patterns and Emergent Behaviour in Robotic Drumming for the degree of Philosophiae Doctor.

The efficient redistribution and control of flow is essential in many biological and engineered systems, from our cardiovascular system to plants and soft robotics. Inspired by nature, microfluidic devices with passive valves have been developed to perform a variety of tasks, from cell manipulation to fluid mixing and reaction control, giving rise to the field of soft hydraulics. In this talk, we present two prototypes of passive valves: one harnessing buckling in slender beams and another leveraging snapping in spherical shells, where fluid-induced elastic instabilities are tamed to achieve function. Through a combination of precision desktop-scale experiments, numerical simulations, and theoretical analysis, we rationalize these behaviors and provide design rules based on scaling regimes of material, geometric, and fluid parameters.

In 2008, looking to bound the face vectors of tropical linear spaces, Speyer introduced the g-invariant of a matroid. He proved its coefficients nonnegative for matroids representable in characteristic zero and conjectured this in general. Later, Shaw and Speyer and I reduced the question to positivity of the top coefficient. This talk will overview work being written up with Andy Berget (Western Washington) that proves the conjecture. The first half will be introductory, aiming to define the g-invariant, state the theorem, and compare to other recent work in matroid theory. The second half will look at the proof techniques.

Geometrically, the main ingredient in the proof is a Kempf collapsing constructed from the matroid tautological vector bundles of Berget--Eur--Spink--Tseng, and an initial degeneration thereof. Combinatorially, it is an extension of the definition of external activity to a pair of matroids and a way to compute it using the fan displacement rule on tropical Chern classes. The work of Ardila and Boocher on the closure of a linear space in (P^1)^n is a special case.
 

Filip Kolar

Charles University in Prague & The Czech Academy of Science

"Natural variation in the strength of interploidy barrier in Arabidopsis arenosa"

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Daniela Jorgelina Sueldo

NTNU

"Accumulation and phytotoxic effects of emerging PFAS in Arabidopsis"

Doctoral candidate Åsmund Hausken Sande at the Department of Mathematics will be defending the thesis Methods and Models for the Management of Extreme Event Risk for the degree of Philosophiae Doctor.

Join us for our weekly lunch seminar in the dScience lounge with Kristin Brunk. She will share insights from 45 years of citizen science data on the bluethroat’s breeding distribution across Fennoscandia, exploring how this iconic alpine bird responds to climate change. Brunk will also discuss innovative bioacoustic research and opportunities for collaboration with data scientists.

Title: A Lagrangian view of overturning and its variability in the eastern subpolar North Atlantic

Speaker: Helen Johnson, University of Oxford

Doctoral candidate Karina Ervik at the Department of Pharmacy, Faculty of Mathematics and Natural Sciences, is defending the thesis "Stereoselective Synthesis of Specialized Pro-resolving Mediators and Analogs: New Leads in Resolution Biology" for the degree of Philosophiae Doctor.

We have the honor of having Luca Onnis from the department of Department of Linguistics and Scandinavian Studies and the Center for Multilingualism in Society across the Lifespan . 

The talk by Luca covers a very exciting multidisciplinary topic and the title is

Chris Spiers is Emeritus Professor at the High Pressure and Temperature Laboratory in the Department of Earth Sciences (Faculty of Geosciences) at Utrecht University

by Anne Hope Davis

Centre for Planetary Habitability

Hylleraas seminar, hosted in Tromsø

Welcome to our GeoHyd Lunch Seminar on Friday 22 November @ 12:15 in Aud. 1 in the Geology Building. The seminar is held by Regine Hock, University of Oslo.

Based on J. Kollár and C. Voisin. Flat pushforwards of Chern classes and the smoothability of cycles below the middle dimension. Ann. of Math. (2), 200(2):771–797, 2024.