Department of

# Mathematics

Seminar Calendar
for Graduate Analysis Seminar events the year of Tuesday, March 13, 2018.

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events for the
events containing

Questions regarding events or the calendar should be directed to Tori Corkery.
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Friday, January 19, 2018

12:00 pm in 443 Altgeld Hall,Friday, January 19, 2018

#### Organizational meeting

###### Anna Lysts (UIUC Math)

Abstract: We will find a regular seminar time for the semester and people will volunteer for dates to give talks. Cookies will be provided of course.

Friday, January 26, 2018

12:00 pm in 443 Altgeld Hall,Friday, January 26, 2018

#### Fourier transform of Radon measures on locally compact groups

###### Fernando Roman Garcia (UIUC Math)

Abstract: In Euclidean space, the Fourier transform of a compactly supported Radon measure is a bounded Lipschitz function. Properties of this function can translate into properties of the measure. In this talk we will see how one can develop corresponding theory for a general class of locally compact groups. If time permits, we will discuss applications of some of these results to geometric set theory in this class of groups.

Friday, February 2, 2018

12:00 pm in 443 Altgeld Hall,Friday, February 2, 2018

#### CANCELED- A short proof of the Schwartz Kernel Theorem

Abstract: Schwartz’ kernel theorem is a foundational result in the theory of distributions, going on to inspire many further techniques in analysis, e.g. Pseudodifferential Operators. And, like many other inspiring results, much is made of the statement and its consequences without considering much detail of the proof. In this talk I’ll give a proof of the theorem suggested in lecture notes of Richard Melrose.

Friday, February 9, 2018

12:00 pm in 443 Altgeld Hall,Friday, February 9, 2018

#### Symmetrization Techniques in Functional Analysis

###### Derek Kielty (UIUC Math)

Abstract: Optimization problems are of great importance in analysis. Often times an optimization problem has many symmetries built into it. It is a natural and important question to determine if the optimizers inherit all of the symmetries of the optimization problem itself. Symmetrization techniques play an important role in answering this question. In this talk I will give a basic introduction to symmetrization techniques and discuss their applications to functional analysis. The prerequisites for this talk are strong calculus muscles and a bit of Math 540 notation.

Friday, February 16, 2018

12:00 pm in 443 Altgeld Hall,Friday, February 16, 2018

#### Endomorphisms of B(H)

###### Chris Linden (UIUC Math)

Abstract: We will discuss a connection between the representation theory of Cuntz algebras and the classification of endomorphisms of B(H). No background in operator algebras will be assumed.

Friday, March 2, 2018

12:00 pm in 120 Wohlers Hall,Friday, March 2, 2018

#### The Ribe Program, or, Nonlinearizing linear properties of Banach Spaces

###### Chris Gartland

Abstract: CANCELED BECAUSE OF STRIKE

Friday, March 9, 2018

12:00 pm in 443 Altgeld Hall,Friday, March 9, 2018

#### The Ribe Program, or, Nonlinearizing linear properties of Banach Spaces

###### Chris Gartland (Illinois Math)

Abstract: I'll give an overview of a research program in geometric functional analysis named after Martin Ribe. The program is so named because of his important result in 1978 stating that two uniformly homeomorphic Banach spaces are mutually finitely representable. The aim of the program is to reformulate linear, local properties of Banach spaces into (nonlinear) metric properties. This talk is based off the survey "An Introduction to the Ribe Program" by Assaf Naor.

Friday, March 16, 2018

12:00 pm in 443 Altgeld Hall,Friday, March 16, 2018

#### The Complexity of Isomorphism Classes of Banach Spaces

###### Mary Angelica Tursi (UIUC Math)

Abstract: It is commonly known that separable Banach spaces embed isometrically into the separable space $C(\Delta)$, where $\Delta$ is the Cantor set. Taking the Effros-Borel structure $\mathcal F(C(\Delta))$, we can then view the collection of separable Banach spaces as a Borel subset $\mathcal B \subseteq \mathcal F(C(\Delta))$ and consider the existence of an isomorphism between Banach spaces to be an equivalence relation on $\mathcal B$. For this expository talk, I will present some basic descriptive set theoretic techniques used to determine the complexity of isomorphism equivalence classes, in particular the Borel case of the class for $\ell_2$, and a non-Borel analytic case with Pelczynski’s universal space $\mathcal U$.

Friday, March 30, 2018

12:00 pm in 443 Altgeld Hall,Friday, March 30, 2018

#### To Be Announced

###### Terry Harris (UIUC Math)

Friday, April 6, 2018

12:00 pm in 443 Altgeld Hall,Friday, April 6, 2018