Infosheet (March 28th, 2017)

Queen's University - Department of Mathematics and Statistics


Tuesday, March 28

Dynamics Seminar

Time: 3.30 p.m.

Place: Jeffery 422

Speaker: Francesco Cellarosi

Title: Aaronson’s distributional ergodic theorem

Abstract Attached

Wednesday, March 29

Curves Seminar

Time: 3:30 pm.

Place: Jeffery 422

Speaker: Mike Roth

Title: G-linearizations of line bundles III

Abstract Attached

Thursday, March 30

3MT finals

Time: 4:30 p.m.

Place: Dupuis Hall Auditorium

Claire Boteler has made it to the 3MT finals. Let’s show our support.

http://queensu.ca/3mt/final-2017

Thursday, March 30

Math Club

Time: 5:30 p.m.

Place: Jeffery 118

Speaker: David Wehlau, Queen’s University / RMC

Title: On the converse of the Intermediate Value Theorem

Abstract Attached

Friday, March 31

Number Theory Seminar

Time: 10:30 a.m.

Place: Jeffery 422

Speaker: Arpita Kar

Title: A conjecture of Bateman regarding r_5(n)

Abstract Attached

Friday, March 31

Department Colloquium

Time: 2:30 p.m.

Place: Jeffery 234

Speaker: Nancy Reid, University of Toronto

Title: Big data, data science, statistics

Abstract Attached

Monday, April 3

Seminar in Free Probability

Time: 2:30 p.m.

Place: Jeffery 202

Speaker: Pei-Lun Tseng, Queen’s University

Title: Infinitesimal freeness

Abstract Attached

Monday, April 10

Ph.D. Thesis Defense

Time: 10:00 a.m.

Place: Jeffery 521

Ph.D. Student: Peng-Jie Wong

Title: Character Theory and Artin L-functions

Supervisor: Ram Murty

Wednesday, April 19

Ph.D. Thesis Defense

Time: 1:00 p.m.

Place: Jeffery 521

Ph.D. Student: Yinzheng Gu

Title: Non-commutative Independences for Paris of Faces

Supervisors: Jamie Mingo and Serban Belinschi

Items for the Info Sheet should reach Anne ( burnsa@queensu.ca) by noon on Monday. The Info Sheet is published every Tuesday.


CALCULATOR EXAM POLICY , the official calculator is a Casio fx-991, or one with a blue sticker as issued by School of Business. All exam cover pages must only refer to these calculators only; any other exam cover, including other calculators (ie gold sticker) will not be accepted by the exams office. Proctors are going to be instructed to be less lenient with calculators that aren’t Casio fx-991 (or blue sticker from COMM), and will likely to be taking them away.


Tuesday, March 28, 3:30 p.m. Jeffery 422 - Dynamics Seminar

Speaker: Francesco Cellarosi

Title: Aaronson’s distributional ergodic theorem

Abstract: We know that it is impossible to have a pointwise ergodic theorem in Infinite Ergodic Theory, due to a theorem of Jon Aaronson. Nevertheless, under some assumptions, one can show a weaker form of the ergodic theorem, also due to Aaronson.

Surprisingly enough, some probabilistic ingredients are needed in the theorem. I will present a 1-dimensional version of this theorem and some examples.


Wednesday, March 29, 3:30 p.m. Jeffery 422 - Curves Seminar

Speaker: Mike Roth

Title: G-linearizations of line bundles III

Abstract: We will prove the proposition on the Picard group of G x X, show how the two different descriptions of G-linearization are connected, and discuss related topics.


Thursday, March 30, 5:30 p.m. Jeffery 118 - Math Club

Speaker: David Wehlau

Title: On the converse of the Intermediate Value Theorem

Abstract: Suppose that f: ℝ ➝ ℝ is a function. The Intermediate Value Theorem (IVT) asserts that if f is continuous then for any real numbers a, b, and y with a < b and y between f(a) and f(b) there exists x ∊ [a,b] such that f(x)=y.

We consider whether the converse of this theorem is true:

Question: Suppose that for any real numbers a, b, and y with a < b and y betweenf(a) and f(b) there exists x ∊ [a,b] such that f(x)= y. Does this imply that f is continuous?

Even if the answer to this question is negative, perhaps we can conclude that the function f is close in some sense to being continuous.

We will consider this question and see what we can conclude about the continuity of f.


Friday, March 31, 10:30 a.m. Jeffery 422 - Number Theory Seminar

Speaker: Arpita Kar

Title: A conjecture of Bateman regarding r_5(n)

Abstract: We will discuss about a conjecture made by Paul T. Bateman for the exact formula for $\sum{|j| \leq n}\sigma(n-j^2)$ and talk about some recent developments on the conjecture. This is joint work with Prof. Ram Murty.


Friday, March 31, 2:30 p.m. Jeffery 234 - Department Colloquium

Speaker: Nancy Reid

Title: Big data, data science, statistics

Abstract: The Canadian Statistical Sciences Institute developed a six-month thematic program on big data in 2015, with substantial funding from the Fields Institute, and support from PIMS, CRM and AARMS for activities across the country. By the end of this program, big data had given way to data science as the phrase du jour, and undergraduate and graduate programs in data science are being developed at a rapid pace.

In this talk I will present my own views on aspects of data science research, with reference to lessons learned from the thematic program and the many initiatives developing since then. I will emphasize the role of statistical science in the new world of data science — both old and new statistical ideas seem to be in demand.


Monday, April 3, 2:30 p.m. Jeffery 202

Seminar in Free Probability and Random Matrices

Speaker: Pei-Lun Tseng

Title: Infinitesimal freeness

Abstract: In this talk, we will introduce the notion of infinitesimal freeness, and we will show an equivalent condition and some properties of infinitesimal freeness. Also, we will establish the relation between type B freeness and infinitesimal freeness.

Seminar website: http://www.mast.queensu.ca/~mingo/seminar/

Contact Info

Department of Math & Stats
Jeffery Hall, 48 University Ave.
Kingston, ON Canada, K7L 3N6
Phone: (613) 533-2390
Fax: (613) 533-2964
mathstat@mast.queensu.ca
Office Hours: 8:30am-12:00pm & 1:00pm-4:30pm

Search