# Seminars

### Past Events

**
Canadian Mathematical
Society Winter Meeting****Delta Chelsea Hotel,
December 10-12, 2011, Toronto**

Co-hosted by Ryerson
University

## Departmental Colloquium

These colloquia are free and open to all. The colloquia will take place once or twice a month on Thursdays at 12:10-1:00. Refreshments will be served.

#### Upcoming Seminars

** Thursday, April 6, 2017 at 12:10pm, Location: ENG-210**

Dr.Alexander Schied, University of Mannheim, Institute of Mathematics

University of Waterloo, Department of Statistical and Actuarial Sciences

Robustness issues in risk estimation

#### Recent Seminars

** Thursday, March 30, 2017 at 12:10am, Location: ENG-210**

Dr. Peter Marbach,

Department of Computer Science, University of Toronto

Modeling and Analysis of Communities in Social Networks

** Friday, March 24, 2017 at 11:10am, Location: ENG-210**

Dr. Anna T. Lawniczak,

Department of Mathematics & Statistics, University of Guelph

Cognitive Agents Learning to Cross a CA Based Highway

**Tuesday, November 1, 2016 at 11:10pm, Location: ENG-210**

Speaker: Dr. Traian Pirvu, McMaster University

Multi-Stock Portfolio Optimization under Prospect Theory

**Thursday, November 3, 2016 at 12:10pm, Location: ENG-210**

Speaker: Dr. Benjamin Rossman, University of Toronto

The computational complexity of subgraph isomorphism

** Thursday, October 27, 2016 at 12:10pm, Location: ENG-210**

Dr. Sébastien Benzekry, Institut de Mathématiques, University of Bordeaux

Title:
Mathematical modeling of metastasis: Predicting the invisible.

**Monday, April 11, 2016 at 12:10pm, Location: ENG-210**

Speaker: Dr. Jason Brown, Department of Mathematics and Statistics,

Dalhousie University

Title: Colourings, Polynomials and Roots

**Thursday, March 24, 2016 at 12:10pm, Location: ENG-210**

Speaker: Dr. Peter Carr, New York University's Courant Institute of Mathematical Sciences

Title: Vol, Skew, and Smile Trading

** Thursday, March 17, at 12:10pm, Location: ENG-210 **

Speaker: Dr. Troy Day, Department of Mathematics and Statistics, Queen's University

Title: Modeling the evolutionary biology of drug resistance

** Friday, December 4, at 12:10pm, Location: ENG-210 **

Title: Automorphisms of Steiner triple systems

** Thursday, November 19, 2015 at 1:10pm, Location: ENG-210 **

Speaker: Dr. David Saunders,
Department of Statistics and Actuarial Sciences, University of Waterloo

Title: An Optimal Stopping Problem Arising in Hedge Fund Investing

**Monday, March 2, 2015, 1:10pm, ENG-210 **

Speaker: Raymond Spiteri, Department of Computer Science,
University of Saskatchewan

Secrets of Success for Numerical Methods in Heart Simulation

## Master's Seminar Series (AM 8000)

These seminars are free and open to all. With some exceptions, seminars will take place two to three times a month on Thursdays between 12:10-2:00.

#### Upcoming Seminars

**TBA**

#### Recent Seminars

** Thursday, November 5, at 1-2pm, Location: ENG-210 **

**1st talk **by 1st talk by Dr. Garnet Ord at noon (sharp)

Title: Quantum Mechanics, Special Relativity and Applied Math

**2nd talk **by Dr. Alexey Rubtsov at 12:30pm

Title: Optimal Investment Strategies

** Thursday, October 29, at 12pm-2pm, Location: ENG-210 **

**1st talk **by Dr. Dejan Delic at noon (sharp)

Title: Computational Complexity of Constraint Satisfaction Problems

**2nd talk **by Dr. Anthony Bonato at 12:30

Title: Modelling, mining, and searching networks

**3rd talk **by Dr. Sebastian Ferrando at 1pm

Title: Research Topics in Financial mathematics

**4th talk **by Dr. Boza Tasic at 1:30pm

Title: Universal Algebra and its applications

## Graphs at Ryerson (G@R) Seminars

Graphs @ Ryerson (G@R) is a group of researchers and students interested in pure and applied graph theory, and is housed in the Mathematics Department at Ryerson University. G@R runs a regular seminar series given by its members and visitors. Seminars usually take place in ENG210, on Thursdays at 1 pm.

#### Upcoming Seminars

** Monday, Oct 23, 2017 at 11:00am, Location: ENG-210**

Dr. Konstantinos Georgiou, Ryerson University

Search on a Line by Byzantine Robots

#### Recent Seminars

** Monday, Oct 16, 2017 at 11:00am, Location: ENG-210**

Dr. Konstantinos Georgiou, Ryerson University

Searching with Beachcombers

** Monday, Oct 2, 2017 at 11:00am, Location: ENG-210**

Dr. Konstantinos Georgiou, Ryerson University

Know When to Persist: Deriving Value from a Stream Buffer

** Monday, Sep 25, 2017 at 11:00am, Location: ENG-210**

Dr. Huda Chuangpishit, Ryerson University

Rendezvous on a line by location-aware robots despite the presence

of byzantine robots

** Monday, Sep 18, 2017 at 11:00am, Location: ENG-210**

Dr. Pawel Pralat, Ryerson University

Clique colouring of binomial random graphs and random geometric graphs

** Monday, May 8, 2017 at 12:00pm, Location: ENG-210**

Dejan Delic, Ryerson University

From Graph isomorphism to a New Algorithm for Maltsev

Constraint Satisfaction Problems

** Monday, May 1, 2017 at 10:00am, Location: ENG-210**

Konstantinos Georgiou, Ryerson University

Search-and-Fetch with 2 Robots on a Disk

** Tuesday, April 25, 2017 at 12:00pm, Location: ENG-210**

Dr. Maksim Mironov, Moscow Institute of Physics and Technology

On Mixing in Pairwise Markov Random Fields with Application to Social Networks

** Monday, April 10, 2017 at 10:00am, Location: ENG-210**

Dr. Ewa Infeld, Ryerson University

The Graph Theory of On-line Anonymity Systems and Browsing Privacy

** Monday, March 27, 2017 at 10:00am, Location: ENG-210**

Dejan Delic, Ryerson University

Space Dichotomy for List Homomorphism Problems

** Monday, March 20, 2017 at 10:00am, Location: ENG-210**

Dr. Anthony Bonato, Ryerson University

Overprescribed Cops and Robbers

** Monday, March 6, 2017 at 10:00am, Location: ENG-210**

Dr. Edward Lee, University of Waterloo

Circle Graph Obstructions

** Monday, February 13, 2017 at 11:00am, Location: ENG-210**

Dr. Pawel Pralat, Ryerson University

Modularity of complex networks models

** Monday, February 6, 2017 at 10:00am, Location: ENG-210**

Tommaso Traetta, Ryerson University

Title: f-Pyramidal Steiner Triple Systems

** Friday, January 27, 2017 at 11:00am, Location: ENG-210**

Dr. Andrei Raigorodskii, DIHT MIPT & Yandex

The independence numbers and the chromatic numbers of random

subgraphs of Kneser graphs and their generalizations

** Thursday, December 1, 2016 at 10:00am, Location: ENG-210**

Dr. Konstantinos Georgiou, Ryerson University

Geometric and Computational Aspects for Attacking Combinatorial

Optimization Problems Using Semi-Definite Programs

** Thursday, November 17, 2016 at 10:00am, Location: ENG-210**

Dr. Gokhan Yildirim, York University

On the Longest monotone and alternating subsequences of

pattern-avoiding permutations

** Thursday, November 3, 2016 at 10:00am, Location: ENG-210**

Dr. Igor Shinkar, University of California, Berkeley

On Percolation and NP-Hardness

** Thursday, October 20, 2016 at 10:00am, Location: ENG-210**

Michael Molloy, Department of Computer Science, University of Toronto

Entropy compression and the Lovasz Local Lemma

#### Recent Seminars

** Thursday, October 6, 2016 at 10:00am, Location: ENG-210**

Bogumil Kaminski, Warsaw School of Economics, Poland

On the relationship between call graph topology and prices on pre-paid

telecommunication market

** Thursday, September 22, 2016 at 10:00am, Location: ENG-210**

Dr. Ewa Infeld, Ryerson University

Avoidance coupling of simple random walks.

** Thursday, September 15, 2016 at 10:00am, Location: ENG-210**

Dr. Pawel Pralat, Ryerson University

Perfect matchings and Hamiltonian cycles in the preferential attachment model

** Monday, April 25, 2016 at 11:00am, Location: ENG-210**

Dejan Delic Ryerson University

Atomization of Constraint Satisfaction Problems and Partition Pebble Games

** Monday, March 21, 2016 at 12:00pm, Location: ENG-210**

Xavier Perez-Gimenez, Ryerson University

Perfect matchings and Hamilton cycles in the preferential attachment model

** Monday, March 7, 2016 at 12:00pm, Location: ENG-210**

Speaker: Andrea Burgess, University of New Brunswick (Saint John Campus)

On the Hamilton-Waterloo problem with odd cycle lengths

## Biomathematics and Fluids Seminars

The Biomathematics and Fluids Research Group at Ryerson runs a regular seminar series given by its visitors. The seminars are held in ENG 210, Thursdays at 2pm.

#### Upcoming Seminars

#### Recent Seminars

** Monday, February 29th, 9:30 am, ENG 210, Location: ENG288 **

Speaker: Dr. Xi Huo, Ryerson University

Mathematical modelling with applications to controlling emerging

infectious diseases and measuring the success of interventions in

microbial stewardship

** Thursday, February 25th, 9:30 am, ENG358 **

Speaker: Dr. Venkata Satya Kumar Manem, Princess Margaret Cancer Center

Mathematics: A Key to Probe Complex Biological Systems

** Monday, February 22, 9:30 am, ENG162 **

Speaker: Dr. Kathleen Wilkie, Center of Cancer Systems Biology, Tufts University School of Medicine

Mathematically Modelling the Body's Response to Cancer

** Thursday, February 11, 2016 2:15pm, Location: ENG288 **

Speaker: Dr. Robert Strehl, Ryerson University

Stochastic micro- and mesoscale simulations of
biochemical reaction-diffusion systems

** Thursday, January 28, 2016 10:30am, Location: VIC736 **

Speaker: Dr. Qiming Wang, York University

Problems in interfacial fluid mechanics and tissue mechanics

## Financial Mathematics Seminars

The Financial Mathematics Research Group at Ryerson runs a regular seminar series; group members, students and visitors will be presenting talks as advertised below.

#### Upcoming Seminars

** Thursday, September 29, 2016 at 2:30pm, Location: ENG-210**

Dr. Pablo Olivares, Ryerson University

Title: Pricing and Hedging some Crack and Spark Contracts in Energy

Markets under Levy Processes
Abstract: We discuss the pricing of some derivative contracts in the Energy market whose
payoff depends on the value of multiple assets. In particular, we focus on European and Barrier
options having electricity, gasoline, natural gas and uranium as underlying assets. In order to capture
their particular dynamic, we consider models with discontinuous jumps and mean reverting
properties. Several ad-hoc approximations and numerical issues are analysed.

#### Recent Seminars

** Thursday, January 28, 2016 from 12:00pm-1:00pm, Location: ENG288 **

Speaker: Michael Hasler, Rotman School of Management, University of Toronto

Dynamic Attention Behaviour Under Return Predictability

#### Recent Seminars

** Thursday, January 21, 1-2pm, Location: VIC736 **

Speaker: Dr. Oleksandr Romanko, Research Analyst,

Risk Analytics - Business Analytics, IBM Canada

Adjunct Professor, University of Toronto

Scenario-Based Financial Value-at-Risk Optimization

** Friday, November 27, from 2:00pm to 5:00pm, Location: ENG-210 **

Speaker: Nikolay Ryabkov, Principal, Quantitative Investment and

Alpha Research for OMERS
Title: Challenges and Opportunities in Quantitative Investment

** Monday, November 30, at 12am-1pm, Location: ENG-210 **

Speaker: Dr. Haomiao Yu, Economics Department, Ryerson University

Type-Symmetric Randomized Equilibrium