Department of Mathematics and Statistics

Department of Mathematics and Statistics
Department of Mathematics and Statistics
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Geometric Sports Analytics - Queen's University Basketball

Monday, June 1st, 2020

Time: 2:00-3:30 p.m.  Place: Virtual Zoom Meeting

Speakers: James Bambury (Head Coach, Queen's Women's Basketball) & Will Featherstonhaugh (Assistant Coach, Queen's Women's Basketball & Manager and Associate Actuary, Risk Management at Empire Life)

Seminar Organizers: Catherine Pfaff & Daniel McBride

Information: Please email Catherine Pfaff for more information and to get the Zoom link.

Geometric Sports Analytics - Queen's University Athletics

Monday, May 11th, 2020

Time: 2:00-3:30 p.m.  Place: Virtual Zoom Meeting

Speakers (Part I): Ryan Ratushniak (Head Coach, Queen's Women's Volleyball) & Natasha Spaling (Assistant Coach, Queen's Women's Volleyball)

Speakers (Part II): Miles Hoaken (Director of Analytics, Queen's Men's Hockey)

Seminar Organizers: Catherine Pfaff & Daniel McBride

Information: Please email Catherine Pfaff for more information and to get the Zoom link.

Geometric Sports Analytics - Dr. Joshua Pohlkamp-Hartt (Hockey Statistician)

Monday, May 4th, 2020

Time: 2:00-3:30 p.m.  Place: Virtual Zoom Meeting

Speakers: Dr. Joshua Pohlkamp-Hartt (Boston Bruins Hockey Statistician)

Seminar Organizers: Catherine Pfaff & Daniel McBride

Information: Please email Catherine Pfaff for more information and to get the Zoom link.

Geometric Sports Analytics - Queen's University Hockey

Monday, April 27th, 2020

Time: 2:00-3:30 p.m.  Place: Virtual Zoom Meeting

Speakers: Brett Gibson (Head Coach, Queen's Men's Hockey), Matthew Holmberg (Head Coach, Queen's Women's Hockey), & Miles Hoaken (Director of Analytics, Queen's Men's Hockey)

Seminar Organizers: Catherine Pfaff & Daniel McBride

Information: Please email Catherine Pfaff for more information and to get the Zoom link.

Geometric Sports Analytics - Dave Butcher & Dan Valley

Monday, April 20th, 2020

Time: 2:00-3:30 p.m.  Place: Virtual Zoom Meeting

Speakers: Dave Butcher (Head Coach, Queen's Men's Rugby) & Dan Valley (Head Coach, Queen's Women's Rugby) 

Seminar Organizers: Catherine Pfaff & Daniel McBride

Information: Please email Catherine Pfaff for more information and to get the Zoom link.

Department Colloquium - Tai-Peng Tsai (University of British Columbia)

Tai-Peng Tsai (University of British Columbia)

Friday, March 13th, 2020

Time: 2:30 p.m.  Place: Jeffery Hall 234

Speaker: Tai-Peng Tsai (University of British Columbia)

Title: Discretely self-similar solutions of incompressible Navier-Stokes equations and the local energy class.

Abstract: In this talk, we first review several concepts of solutions of the incompressible Navier-Stokes equations and the questions of regularity and uniqueness. We then introduce forward and backward self-similar solutions and their variants, and the similarity transform. We next sketch a few constructions of forward discretely self-similar (DSS) solutions for arbitrarily large initial data in weak $L^3$ and $L^2$ local. We finally explain their connection to the theory of local energy solutions.

Tai-Peng Tsai graduated from the University of Minnesota under the supervision of Vladimir Sverak. He was a Courant Instructor at the New York University and a Member of the Institute for Advanced Study before he joined the University of British Columbia. He works on the analysis of fluid and dispersive PDEs, including the regularity problem and self-similar solutions of Navier-Stokes equations, the asymptotic behavior of multi-solitons of Schrödinger and gKdV equations, and the regularity of energy critical Schrödinger maps.

Number Theory Seminar - Keshia Yap

Monday, March 16th, 2020

Time: 4:30-5:30 p.m.  Place: Jeffery Hall 422

Speaker: Keshia Yap

Title: Dimension of magic squares over a field.

Abstract: In this talk, we will follow the proof of Charles Small's 1988 paper to compute the dimension of magic squares over fields. A magic square of size $n$ over a field $F$ is an $n \times n$ matrix for which every row, every column, the principal diagonal and the principal backdiagonal all have the same sum. The set of all magic squares is an $F$-vector space. We will prove that for $n \geq 5$, its dimension is $n^2 - 2n$ (for all $F$), and for $n

Dynamics, Geometry, & Groups - Merlin Incerti-Medici

Friday, March 6th, 2020

Time: 10:30 a.m Place: Jeffery Hall 319

Speaker: Merlin Incerti-Medici (Universität Zürich)

Title: Circumcenter extension maps for Hadamard manifolds.

Abstract: Given a geodesically complete CAT(-1) space, we can associate a boundary at infinity to it. This boundary is equipped with a geometric structure called cross ratio. While it was known for several decades that the boundary together with the cross ratio completely determines the interior space in some special cases, we recently learned that they always roughly determine the interior space. The key tool in this process is a construction called the circumcenter extension. In this talk, we survey known results about the circumcenter extension and show that its construction can be performed in a large class of CAT(0) spaces and still yields interesting results.

Math Club - Troy Day (Queen's University)

Thursday, March 12th, 2020

Time:  5:30 - 6:30 p.m Place: Jeffery Hall 118

Speaker:  Troy Day (Queen's University)

Title:  What does the equation $e^{-2x}=1-x$ have to do with epidemiology?

Abstract: An important goal of epidemiology is to predict the spread of infectious diseases. We will see how relatively simple mathematical models are used to generate such predictions, as well as how they are used to guide public health interventions.

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