* Seuraavan viikon tapahtumat merkitty tähdellä
Dr. Lucas Hataishi (University of Oxford)
Higher genus symmetric enveloping algebras from factorization homology
* Today * Tuesday 17 February 2026, 10:15, M3 (M234)
A complex algebra equipped with a conjugate-linear involution which can be faithfully represented as a norm-closed algebra of bounded operators on a Hilbert space is called a C-algebra. Examples include the algebra of continuous functions on a locally compact Hausdorff space vanishing at infinity. This is indeed the unique class of commutative C-algebras up to isomorphism. All relations between locally compact Hausdorff spaces can be translated as relation between their algebra of functions, and thus the theory of C*-algebras can be considered a generalization of the theory of locally compact spaces. It offers a framework in which to study algebras of observables in quantum field theory.
In this talk, I will discuss aspects of a recent construction of 2-dimensional topological quantum field theories (TQFTs) from certain inclusions of C-algebras, which we call discrete. I will explain how this notion is an axiomatization of the fixed point subalgebra of a compact group action on a C-algebra. Starting from such an inclusion, the value of the resulting TQFT on a disk is characterized by an associated C*-algebra, called the symmetric enveloping algebra; a concrete realization of an abstract object that have appeared in the algebraic approach to conformal field theories, in the theory of quantum groups and of subfactors. The values of the TQFT on other surfaces give extensions of the symmetric enveloping algebra which come equipped with actions of the mapping class groups.
Teemu Lundström (Aalto)
TBA
* Monday 23 February 2026, 14:15, Y313
TBA
AGC Seminar
Romain Usciati (Paris-Saclay)
TBA
Tuesday 24 February 2026, 10:15, M3 (M234)
Milla Laurikkala
Midterm review
Tuesday 24 February 2026, 11:15, M2 (M233)
Lorenzo Zacchini (Aalto University)
Fractional integrals on spaces of homogeneous type
Wednesday 25 February 2026, 10:15, M3 (M234)
Analysis seminar / Hytönen
Theo Elenius
Midterm review
Wednesday 04 March 2026, 10:15, M3 (M234)
Seminar on analysis and geometry
Eetu Reijonen
On the effect of socioeconomic conditions on population health --- Prediction of disease burden in OECD countries (MSc thesis presentation)
Monday 09 March 2026, 15:15, Y405
Dr. John Urschel (MIT)
TBA
Tuesday 10 March 2026, 15:15, U5 (U147)
Riku Anttila (University of Jyväskylä)
Uniqueness of sign-changing solutions to Trudinger's equation
Wednesday 11 March 2026, 10:15, M3 (M234)
We establish uniqueness for sign-changing solutions to Trudingers parabolic equation with time dependent $C^2$ Dirichlet boundary data.
This talk is based on my joint work with Peter Lindqvist and Mikko Parviainen; preprint available at arXiv:2602.04748.
Seminar on analysis and geometry
Sylvester Eriksson-Bique (University of Jyväskylä)
p-Dirichlet structures, the resistance conjecture and energy image density property
Wednesday 11 March 2026, 11:15, M3 (M234)
We develop the axioms for p-dirichlet structures. This abstract framework unifies different approaches and leads to new results in conformal geometry. We show how two conjectures that were open for Dirichlet spaces can be shown to hold in this very general setting. In fact, the proofs came from thinking in this general framework. The talk includes joint work with Riku Anttila, Mathav Murugan and Lassi Rainio.
Seminar on analysis and geometry
Matematiikan kandiseminaari (Bachelor thesis seminar in Math.)
Thursday 12 March 2026, 09:00, TBA
Further information
Ohjelma: https://mycourses.aalto.fi/course/view.php?id=34597#module-908887
Philémon Bordereau (EPFL)
TBA
Tuesday 07 April 2026, 10:15, M3 (M234)
Zofia Grochulska
TBA
Wednesday 15 April 2026, 10:15, M3 (M234)
Seminar on analysis and geometry / Korte
MSc Ian Välimaa (Aalto)
TBA (Mid-term review)
Monday 20 April 2026, 14:15, M3 (M234)
Aalto Stochastics & Statistics Seminar / Leskelä
Matematiikan kandiseminaari (Bachelor thesis seminar in Math.)
Friday 08 May 2026, 09:00, TBA
Further information
Ohjelma: https://mycourses.aalto.fi/course/view.php?id=34597#module-908887
Matematiikan kandiseminaari (Bachelor thesis seminar in Math.)
Monday 15 June 2026, 09:00, TBA
Further information
Ohjelma: https://mycourses.aalto.fi/course/view.php?id=34597#module-908887
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