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. |
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 y₀ with a
< b and y₀ between f(a) and f(b) there exists x₀ ∊ [a,b]
such that f(x₀)=y₀.
We consider whether the converse of this theorem is true:
Question:
Suppose that for any real numbers a, b, and y₀ with a < b and y₀ betweenf(a) and f(b) there exists x₀ ∊ [a,b] such that f(x₀)= y₀. 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/