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Wednesday, February 14, 2018 4:00 pm - 4:00 pm EST (GMT -05:00)

Continuous Optimization - Sina Rezazadeh

Title: Comprehensive robust counterparts of uncertain problems

Speaker: Sina Rezazadeh
Affiliation: University of Waterloo
Room: MC 5479

Abstract:

We continue our study of Robust Optimization by discussing the paper by Ben-Tal,  Boyd and Nemirovski, "Extending scope of robust optimization: comprehensive robust counterparts of uncertain problems."

Thursday, February 15, 2018 1:30 pm - 1:30 pm EST (GMT -05:00)

Algebraic Graph Theory - Harmony Zhan

Title: Mixing in Discrete-Time Quantum Walks

Speaker: Harmony Zhan
Affiliation: University of Waterloo
Room: MC 6486

Abstract:

Discrete-time quantum walks are building blocks for quantum algorithms. There are some parameters of a quantum walk that affect the performance of a quantum algorithm, such as the (time-averaged) limiting distribution and the mixing time.

Friday, February 16, 2018 3:30 pm - 3:30 pm EST (GMT -05:00)

Tutte Colloquium - Yoav Len

Title: Tangent Lines and the equation 28 = 7 × 4

Speaker: Yoav Len
Affiliation: University of Waterloo
Room: MC 5501

Abstract:

I will discuss combinatorial aspects of tangent lines to curves and planar graphs. In algebraic geometry, every smooth plane curve has finitely many lines that are tangent to it at two separate points.

Monday, February 26, 2018 10:30 am - 10:30 am EST (GMT -05:00)

Special Seminar - Pu (Jane) Gao

Title: Random Networks: Enumeration, Generation, and Universality

Speaker: Pu (Jane) Gao
Affilliation: Monash University
Room: DC 1304

Abstract:

Large networks appear in almost all branches of the sciences and in everyday life, and they are often modeled by random graphs. Among the various random graph models, random graphs with specified degrees are particularly important in modelling and analyzing real-world networks.

Thursday, March 1, 2018 1:30 pm - 1:30 pm EST (GMT -05:00)

Algebraic Graph Theory Seminar - Chris Godsil

Title: Unitary Groups

Speaker: Chris Godsil
Affiliation:  University of Waterloo
Room: MC 6486

Abstract:

Unitary groups play an important role in physics and in finite geometry. This talk, the first of two, will provide an introduction to the topic focusing on the case where the underlying field is the complex numbers.

Thursday, March 1, 2018 3:30 pm - 3:30 pm EST (GMT -05:00)

Graphs and Matroids Seminar - Jorn van der Pol

Title: Counting matroids

Speaker: Jorn van der Pol
Affiliation: University of Waterloo
Room: MC 5479

Abstract:

We discuss several recent results concerning matroid enumeration and typical properties of matroids, emphasizing the central role that sparse paving matroids play in these results.