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Friday, August 3, 2018 3:30 pm - 3:30 pm EDT (GMT -04:00)

Tutte Distinguished Lecture Series - Federico Ardila

Title: The geometry of matroids

Speaker:  Federico Ardila
Affiliation: San Francisco State University
Room: MC 5501


Matroid theory is a combinatorial theory of independence which has its origins in linear algebra and graph theory, and turns out to have deep connections with many other fields.

Tuesday, November 27, 2018 5:30 pm - 5:30 pm EST (GMT -05:00)

CryptoWorks21 Distinguished Lecture - Marc Morin

The "blood, sweat, tears, toil and triumphs" of commercializing technology

Marc Morin is the co-founder and CEO of Auvik Networks, creators of cloud-based software that makes it dramatically easier for IT managed service providers to monitor and manage their clients' IT networks. A serial entrepreneur, Marc has previously co-founded several successful companies, including PixStream (acquired by Cisco for USD$369 million) and Sandvine (Sold to Francisco Partners for CAD$582 million), and is a seed investor in a number of local tech companies.

Monday, September 14, 2020 4:00 pm - 4:00 pm EDT (GMT -04:00)

Impact and beyond

The profound impact of early discovery, experimentation, and disruption through research and invention

Researchers today build on the knowledge and discoveries made by those who have come before them. How can today’s researchers light the early pathways and curiosities for the research breakthroughs of the future? How can we demonstrate the impact and potential of the yet-to-be known? And, what if any, role does academia, industry, the Faculty of Mathematics, and Canada play in increasing the discovery journey to these new frontiers?

Wednesday, July 28, 2021 10:00 am - 10:00 am EDT (GMT -04:00)

Optimization: Theory, Algorithms, Applications Lecture Series

Title: A primal-dual interior-point algorithm fo rnonsymmetric conic optimization

Speaker: Erling D. Andersen
Affiliation: Mosek ApS
Zoom: Register through The Fields Institute


It is well known that primal-dual interior-point algorithms for linear optimization can easily be extended to the case of symmetric conic optimization, as shown by Nesterov and Todd (NT) in their 1997 paer about self-scaled barriers. Although many convex optimization problems can be expressed using symmetric cones then models involving for instance exponential functions do not belong to the class of symmetric conic optimization problems.

Monday, July 4, 2022 11:30 am - 11:30 am EDT (GMT -04:00)

Algebraic Graph Theory Seminar - Dheer Noal

Title: Spectral Turan Problems on trees and even cycles

Speaker: Dheer Noal
Affiliation: University of Delaware
Zoom: Please contact Sabrina Lato for Zoom link

Abstract:  In this talk, we discuss some recent progress with the spectral analogue of a few Turán problems: Instead of maximizing the number of edges, our objective is to maximize the spectral radius of the adjacency matrices of graphs not containing some subgraphs.

Tuesday, July 5, 2022 2:30 pm - 2:30 pm EDT (GMT -04:00)

Graph and Matroids Seminar - Sepehr Hajebi

Title: Bounded treewidth in hereditary graph classes

Speaker: Sepehr Hajebi
Affiliation: University of Waterloo
Location: MC 5417

Abstract: A highlight of the superb graph minors project of Robertson and Seymour is their so-called Grid Theorem: a minor-closed class of graphs has bounded treewidth if and only it does not contain all planar graphs. Which induced-subgraph-closed graph classes have bounded treewidth?

Thursday, July 7, 2022 1:00 pm - 1:00 pm EDT (GMT -04:00)

Algebraic Combinatorics Seminar - Emily Gunawan

Title: Box-ball systems, RSK, and Motzkin paths 

Speaker: Emily Gunawan
Affiliation: University of Oklahoma
Location: MC 5479, please contact Olya Mandelshtam for Zoom link.

Abstract:  A box-ball system (BBS) is a discrete dynamical system whose dynamics come from the balls jumping according to certain rules. A permutation on n objects gives a BBS state by assigning its one-line notation to n consecutive boxes. After a finite number of steps, a box-ball system will reach a steady state. From any steady state, we can construct a tableau called the soliton decomposition of the box-ball system.

Friday, July 8, 2022 1:00 pm - 1:00 pm EDT (GMT -04:00)

Combinatorial Optimization Reading Group - Ricardo Fukasawa POSTPONED

Title: Stochastic Optimization

Speaker: Ricardo Fukasawa
Affiliation: University of Waterloo
Location: MC 6029

Abstract: While deterministic optimization problems are very useful in practice, often times the assumption that all data is known in advance does not hold true. One possible way to relax this assumption is to assume that the data depends on random variables. This assumption leads to stochastic optimization problems.