Welcome to Combinatorics and Optimization

Winter 2020 Undergraduate Research Assistantship (URA) Opportunities.

Spring 2019 Undergraduate Research Assistantship Program (URA)Applications for the Spring 2019 program are now closed.

Tutte's Distinguished Lecture Series 

The very successful Tutte's 100th Distinguished Lecture Series has now completed. That success has led to a Tutte Distinguished Lecture once per term. The next lecture will happen in the Spring term.

*Recordings of occurred talks are all available on C&O's YouTube Channel   

Grad Studies: Fall 2019 applications now open

 New Deadline: February 1, '19

  1. July 14, 2019Crypto 2019 Best Young Researcher Award
    IACR logo

    C&O graduate students Samuel Jaques and John Schanck have won the Best Young Researcher Paper Award at Crypto 2019, the 39th Annual International Cryptology Symposium. Their paper, Quantum cryptanalysis in the RAM model: Claw-finding attacks on SIKE, will be presented on August 20 in Santa Barbara.

  2. July 9, 2019Chaitanya Swamy appointed Chair of C&O
    Chaitanya Swamy

    Professor Chaitanya Swamy has been appointed to a ten-month term as chair of the Department of Combinatorics and Optimization. His term begins on September 1, 2019.

  3. June 26, 2019SAC 2019 (August 12-16, 2019)
    SAC 2019

    The Selected Areas in Cryptography (SAC) conference will be held at the University of Waterloo from August 14-16, 2019. The conference co-chairs are Kenneth Paterson (University of London/ETH Zurich) and C&O professor Douglas Stebila

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  1. July 23, 2019Algebraic Combinatorics Seminar - Hugh Thomas

    Title: Reverse plane partitions via quiver representations

    Speaker: Hugh Thomas
    Affiliation: Université du Québec à Montréal
    Room: MC 5417


    Let $\lambda$ be a partition. The reverse plane partitions of shape $\lambda$ are a kind of filling of the Ferrers diagram of $\lambda$ by non-negative integers. Richard Stanley found the generating function which enumerates them according to the sum of the entries.

  2. July 24, 2019Joint C&O/PureMath Colloquium - Soffia Arnadottir

    Title: Graphs in algebra and algebra in graphs

    Speaker: Soffia Arnadottir
    Affiliation: University of Waterloo
    Room: MC 5501


    How do algebraic properties of a graph relate to its graph theoretic properties? What are algebraic properties of graphs? What does the spectrum of a graph tell us about its structure? What is a Cayley graph?

  3. July 25, 2019Algebraic Graph Theory Seminar - Steve Kirkland

    Title: Kemeny's Constant for Markov Chains

    Speaker: Steve Kirkland
    Affiliation: University of Manitoba
    Room: MC 5479


    Markov chains are a much-studied class of stochastic processes, and it is well-known that if the transition matrix A associated with a Markov chain possesses a certain property (called primitivity), then the long-term behaviour of the Markov chain is described by a particular eigenvector of A, known as the stationary distribution vector.

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