Zobrazeno 1 - 10
of 3 377
pro vyhledávání: '"Lansdown A"'
Autor:
Bamberg, John, Lansdown, Jesse
We describe the spreading property for finite transitive permutation groups in terms of properties of their associated coherent configurations, in much the same way that separating and synchronising groups can be described via properties of their orb
Externí odkaz:
http://arxiv.org/abs/2407.07352
Autor:
Lansdown, Jesse, Martin, William J.
Delsarte theory, more specifically the study of codes and designs in association schemes, has proved invaluable in studying an increasing assortment of association schemes in recent years. Tools motivated by the study of error-correcting codes in the
Externí odkaz:
http://arxiv.org/abs/2406.06991
A chamber of the vector space $\mathbb{F}_q^n$ is a set $\{S_1,\dots,S_{n-1}\}$ of subspaces of $\mathbb{F}_q^n$ where $S_1\subset S_2\subset \dotso \subset S_{n-1}$ and $\dim(S_i)=i$ for $i=1,\dots,n-1$. By $\Gamma_n(q)$ we denote the graph whose ve
Externí odkaz:
http://arxiv.org/abs/2406.00740
For finite classical groups acting naturally on the set of points of their ambient polar spaces, the symmetry properties of \emph{synchronising} and \emph{separating} are equivalent to natural and well-studied problems on the existence of certain con
Externí odkaz:
http://arxiv.org/abs/2403.17576
It is known that a Bruen chain of the three-dimensional projective space $\mathrm{PG}(3,q)$ exists for every odd prime power $q$ at most $37$, except for $q=29$. It was shown by Cardinali et. al (2005) that Bruen chains do not exist for $41\le q\leq
Externí odkaz:
http://arxiv.org/abs/2305.01349
Autor:
Ryan Sadjadi, MPH, Cameron Nosrat, BS, Favian Su, MD, Drew A. Lansdown, MD, Brian T. Feeley, MD, C. Benjamin Ma, MD, Alan L. Zhang, MD
Publikováno v:
JSES International, Vol 8, Iss 4, Pp 837-844 (2024)
Background: Given the complexity of arthroscopic rotator cuff repair (ARCR) and increasing prevalence, there is a need for comprehensive, large-scale studies that investigate potential correlations between surgeon-specific factors and postoperative o
Externí odkaz:
https://doaj.org/article/b8d7edbf8c1a4120a8330056dd6394d2
Publikováno v:
Local and Regional Anesthesia, Vol 2013, Iss default, Pp 17-24 (2013)
Andrew K Lansdown,1,2 Paul G McHardy,1 Sanjiv C Patel,1,3 Catherine M Nix,1 Colin JL McCartney1 1Department of Anesthesia, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada; 2University of Sydney, Sydney, NSW, Australia; 3
Externí odkaz:
https://doaj.org/article/11409548fe824fd5917c43790584244f
We classify, up to some notoriously hard cases, the rank 3 graphs which fail to meet either the Delsarte or the Hoffman bound. As a consequence, we resolve the question of separation for the corresponding rank 3 primitive groups and give new examples
Externí odkaz:
http://arxiv.org/abs/2211.02326