Mura Yakerson
Welcome to my home page!
This academic year I'm a postdoc at Regensburg University,
in the research group of Marc Hoyois.
The focus of our research group is motivic homotopy theory,
which applies powerful methods of algebraic topology
to shed light on mysteries of algebraic geometry.
We are partly supported by SFB 1085 "Higher invariants".
I did my PhD under supervision of Marc Levine
at the
Duisburg-Essen University.
And here is a story how my PhD program started: Jail-dreaming
"The more I learned, the more conscious did I become of the fact that I was ridiculous. So that for me my years of hard work at the university seem in the end to have existed for the sole purpose of demonstrating and proving to me, the more deeply engrossed I became in my studies, that I was an utterly absurd person."
Fyodor Dostoevsky, The Dream of a Ridiculous Man
My News
-
MoVid-20: motivic video-conference on April 15th 2020 in Zoom!
Talks by Tom Bachmann, Marc Hoyois, Denis Nardin and myself.
To register, please send an e-mail to Denis (denis.nardin@ur.de) with the subject "MoVid-20".
We look forward to seeing you in Zoom!
- A bank robbery helps to compute the Motive of the Hilbert
scheme of infinite affine space!
- Enjoy Deloop4, a follow-up to Deloop3!
This episode is on geometric models for infinite loop spaces of motivic Thom spectra that were computed previously.
- I will give this talk in our mini-conference MoVid-20!
Title: Motivic generalized cohomology theories from framed perspective
Abstract: All motivic generalized cohomology theories acquire unique structure of so called framed transfers. If one takes framed transfers
into account, it turns out that many interesting cohomology theories can be constructed simply as suspension spectra on certain moduli stacks (and their variations). This way important cohomology
theories on schemes get new geometric interpretations, and so do canonical maps between different cohomology theories. In the talk we will explain the general formalism of framed transfers
and show how it works for various cohomology theories. This is a summary of joint projects with Tom Bachmann, Elden Elmanto, Marc Hoyois, Joachim Jelisiejew, Adeel Khan, Denis Nardin and Vladimir
Sosnilo.
- I gave a talk on 29th February in the Southern California Algebraic Geometry Seminar in San
Diego
and on 27th February in the Seminar on Geometry and Arithmetic in Santa Barbara University.
Title: The motive of the Hilbert scheme of infinite affine
space
Abstract: The Hilbert schemes (of points) of surfaces have many nice properties, however they are hard to study for higher dimensional
schemes. In particular the Hilbert scheme of the two-dimensional affine space has a pure Tate motive, but we don’t know the motives of Hilbert schemes of An for higher n. Surprisingly,
we observe that the ind-scheme Hilb(A∞) has a pure Tate motive, at least rationally. Moreover, if we let both the dimension of affine space and the degree of points go to infinity, we
get that colimd Hilbd(A∞) is A1-homotopy equivalent to the infinite Grassmanian, which has a well-known pure Tate motive thanks to its cellular
structure. Time permitting, we will discuss applications of this result to algebraic K-theory and its version for hermitian K-theory. This is joint work with Marc Hoyois, Joachim Jelisiejew, and
Denis Nardin.
Events
- During 16 March - 10 April I would take part in the program "K-theory,
algebraic cycles and motivic homotopy theory" at INI.
- During 10 February - 6 March I was a research member of the program "Higher Categories
and Categorification" at MSRI.
- ICM 2022 will happen in St. Petersburg, with visa-free entry for all participants!