Events

Filter by:

Limit to events where the first date of the event:
Date range
Limit to events where the first date of the event:
Limit to events where the title matches:
Limit to events where the type is one or more of:
Limit to events tagged with one or more of:
Limit to events where the audience is one or more of:
Thursday, May 24, 2018 11:30 am - 11:30 am EDT (GMT -04:00)

Algebraic Combinatorics Seminar

Title: Asymptotics of the principal of specializations of Schubert polynomials

Speaker: Alejandro Morales
Affiliation: University of Massachusetts Amherst
Room: MC 6486

Abstract: Schubert polynomials were introduced by Lascoux and Sch\"utzenberger in 1982 to study Schubert varieties.

Thursday, May 24, 2018 1:30 pm - 1:30 pm EDT (GMT -04:00)

Algebraic Graph Theory Seminar

Title: Graph Reconstruction

Speaker: Cathy Wang
Affiliation:  University of Waterloo
Room: MC 6486

Abstract: The graph reconstruction conjecture by Kelly and Ulam states that all graphs on at least three vertices are determined by their one-vertex deleted subgraphs, up to isomorphism.

Thursday, May 24, 2018 3:30 pm - 3:30 pm EDT (GMT -04:00)

Graphs and Matroids Seminar

Title: Finding Independent Transversals Efficiently

Speaker: Alessandra Graf
Affiliation: University of Waterloo
Room: MC 5479

Abstract: Let G be a graph whose vertex set is partitioned into classes V1,..., Vm. An independent transversal of G with respect to (V1,...,Vm) is an independent set {v1,...,vm} in G such that vi is in Vi for each i.

Friday, May 25, 2018 3:30 pm - 3:30 pm EDT (GMT -04:00)

Tutte Colloquium - Freddy Cachazo

Title: Combinatorics in Particle Interactions

Speaker: Freddy Cachazo
Affiliation: Perimeter Institute
Room: MC 5501

Abstract:

The main approach for testing physical theories of particles is via scattering experiments. The traditional approach for computing theoretical predictions uses Feynman diagrams.

Thursday, May 31, 2018 11:30 am - 11:30 am EDT (GMT -04:00)

Algebraic Combinatorics Seminar

Title: A single pass bijection between certain quarter plane lattice walks and certain Motzkin-like paths.

Speaker: Karen Yeats
Affiliation: University of Waterloo
Room: MC 6486

Abstract: A p-tandem quarter plane walk is a walk starting at the origin and remaining in the first quadrant

Friday, June 1, 2018 3:30 pm - 3:30 pm EDT (GMT -04:00)

Tutte Colloquium - Andreas Feldmann

Title: Parameterized Approximation Algorithms for Steiner Network Problems 

Speaker: Andreas Feldmann
Affiliation: Charles University, Prague, Czech Republic
Room: MC 5501

Abstract:

Two standard approaches to handle NP-hard optimization problems are to develop approximation and parameterized algorithms.

Friday, June 8, 2018 3:30 pm - 3:30 pm EDT (GMT -04:00)

Tutte Seminar - Ashwin Nayak

Title: Online Learning of Quantum States

Speaker: Ashwin Nayak
Affiliation: University of Waterloo
Room: MC 5501

Abstract:

Suppose we have many copies of an unknown n-qubit state rho. We measure some copies of rho using a known two-outcome measurement E_1, then other copies using a measurement E_2, and so on.