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Friday, July 29, 2016 3:30 pm - 3:30 pm EDT (GMT -04:00)

Tutte Colloquium - Ricardo Fukasawa

Title: The chance-constrained vehicle routing problem

Speaker: Ricardo Fukasawa
Affiliation: University of Waterloo
Room: MC 5501

Abstract:

Tuesday, August 2, 2016 2:30 pm - 2:30 pm EDT (GMT -04:00)

USRA Seminar - Tony Hu

Title: Approximation algorithm for k-anonymity

Tuesday, August 2, 2016 2:30 pm - 2:30 pm EDT (GMT -04:00)

USRA Seminar - Jack Dippel

Title: Min cost bridgeless subgraph of min degree 2 (bridgeless D2)

Speaker: Jack Dippel
Affiliation: University of Waterloo
Room: MC 6486

Abstract: In the bridgeless D2 problem we have a graph with nonnegative edge costs and the goal is to complete a min cost subgraph of degree at least 2 at every node that has no bridges (i.e. no cut edges.).

We discuss NP-hardness, LP relaxations and approximation algorithms.

Wednesday, August 3, 2016 4:00 pm - 5:30 pm EDT (GMT -04:00)

Graph Theory Seminar - Da Qi Chen

Title: On Cyclically 5-Connected Graphs

Speaker: Da Qi Chen
Affiliation: University of Waterloo
Room: M3 3103

Abstract: Tutte's Four-Flow Conjecture states that every bridgeless,  
Petersen-minor-free graph admits a nowhere-zero 4-flow. This hard conjecture has been open for over half a century with no significant progress in the first forty years.

Thursday, August 4, 2016 2:30 pm - 2:30 pm EDT (GMT -04:00)

USRA Seminar - Shelley Wu

Title: Folding Operation on 3-by-2n Standard Young Tableaux

Speaker: Shelley Wu
Affiliation: University of Waterloo
Room: MC 6486

Abstract:

Thursday, August 4, 2016 2:30 pm - 2:30 pm EDT (GMT -04:00)

USRA Seminar - Matthew Sunohara

Title: Drawings of Complete Graphs

Speaker: Matthew Sunohara
Affiliation: University of Waterloo
Room: MC 6486

Abstract:

abstract

Monday, August 8, 2016 3:38 pm - 4:30 pm EDT (GMT -04:00)

Graph Theory Seminar - Sunil Chandran

Title: Separation Dimension of Graphs and Hyper Graphs

Speaker: L. Sunil Chandran
Affiliation Indian Institute of Science, Bangalore
Room MC 6486

Abstract

Tuesday, August 9, 2016 2:30 pm - 3:20 pm EDT (GMT -04:00)

USRA Seminar - Chen Xie

Title: Controllable Graphs Determined by their Generalized Spectrums

Speaker: Chen Xie
Affiliation: University of Waterloo
Room: MC 6486

Abstract

Tuesday, August 9, 2016 2:30 pm - 3:20 pm EDT (GMT -04:00)

USRA Seminar - Shatian Wang

Title: Metric s-t path TSP and the randomized Christofides algorithm

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

Abstract:

USRA Seminar Abstract