General Information


The purpose of the workshop is to stimulate interaction between researchers in different disciplines, who are broadly interested in the subject of numerical ranges and the fundamental quantum marginal problem. The participants will be encouraged to discuss the recent advances as well as the challenges in their respective fields. The topics will include a mixture of traditional ones, such as the N-representability problem, and joint numerical range of operators, as well as emerging new topics that are primarily connected with the field of quantum information, such as computational complexity, quantum state tomography, and quantum entanglement.

Keynote Speakers

Matthias Christandl (University of Copenhagen) (talk slides) (alt slides)

Bob Erdahl (Queens University)

Chi-Kwong Li (College of William and Mary) (talk slides)

Jerome K. Percus (New York University, Courant Institute of Mathematical Sciences)

Mary Beth Ruskai (talk slides)

John Watrous (IQC, University of Waterloo) (talk slides)

Invited Speakers

Jianxin Chen (University of Maryland)
Man-Duen Choi (University of Toronto)
Xingshan Cui (UC Santa Barbara)
Runyao Duan (University of Technology Sydney)
Markus Grassl (Universität Erlangen-Nürnberg ) (
talk slides)
John Holbrook (University of Guelph)
Jinchuan Hou (Taiyuan University of Technology) (talk slides)
Zhengfeng Ji (University of Waterloo) (talk slides)
Nathaniel Johnston (University of Waterloo) (talk slides)
Kohtaro Kato (University of Tokyo)
Marcel Nooijen (University of Waterloo)
Rajesh Pereira (University of Guelph) (talk slides)
Sarah Plosker (Brandon University) (talk slides)
Alexander Sokolov (Princeton University) (talk slides)
Nung-Sing Sze (Hong Kong Polytechnic University) (talk slides)
Si-Hui Tan (National University of Singapore) (talk slides)
Barbara Terhal (RWTH Aachen)
Dimitri Van Neck (Ghent University) (talk slides)
Frank Verstraete (University of Vienna) (talk slides)
Michael Walter (Stanford)
Tzu-Chieh Wei (Stony Brook)
Stephan Weis (Unicamp)
Sebastian Wouters (Princeton University) (talk slides)
Duan-Lu Zhou (Chinese Academy of Sciences)
Karol Zyczkowski (Jagiellonian University) (talk slides)

Previous Related Workshops

Important Dates

  • Registration Opens: March 15 2015
  • Registration Deadline: Aug 2 2015
  • Workshop Begins: Aug 17 2015


Contact Information

Organizing Committee

  • David W. Kribs (Guelph, Chair)
  • Paul W. Ayers (McMaster, co-Chair)
  • Bei Zeng (Guelph, co-Chair)
  • Isaac H. Kim (Perimeter)
  • Nengkun Yu (IQC)


Thanks to our sponsors for their generous contributions towards making this event a success.