438 citations
- University of WaterlooCA46 papers
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- University of OttawaCA10 papers
- Perimeter InstituteCA9 papers
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- Universidad Carlos III de MadridES7 papers
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15 papers · 1 filter
A SAT-based Resolution of Lam's Problem
Curtis Bright, Kevin K. H. Cheung, Brett Stevens +2
In 1989, computer searches by Lam, Thiel, and Swiercz experimentally resolved Lam's problem from projective geometry$\unicode{x2014}$the long-standing problem of determining if a p…
Anisotropic local constant smoothing for change-point regression function estimation
John R. J. Thompson, W. John Braun
Understanding forest fire spread in any region of Canada is critical to promoting forest health, and protecting human life and infrastructure. Quantifying fire spread from noisy im…
H-chromatic symmetric functions
Nancy Mae Eagles, Angèle M. Foley, Alice Huang +2
We introduce -chromatic symmetric functions, , which use the -coloring of a graph to define a generalization of Stanley's chromatic symmetric functions. We say…
Wigner negativity in spin- systems
Jack Davis, Meenu Kumari, Robert B. Mann +1
The nonclassicality of simple spin systems as measured by Wigner negativity is studied on a spherical phase space. Several SU(2)-covariant states with common qubit representations…
A class of graphs with large rankwidth
Chính Hoàng, Nicolas Trotignon
We describe several graphs with arbitrarily large rankwidth (or equivalently with arbitrarily large cliquewidth). Korpelainen, Lozin, and Mayhill [Split permutation graphs, Graphs…
Know Your Clients' behaviours: a cluster analysis of financial transactions
John R. J. Thompson, Longlong Feng, R. Mark Reesor +1
In Canada, financial advisors and dealers are required by provincial securities commissions and self-regulatory organizations--charged with direct regulation over investment dealer…