Zobrazeno 1 - 10
of 8 553
pro vyhledávání: '"Gordon, F"'
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
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
Publikováno v:
J. Algebraic Combin. 57 (2023), 515-524
A graph is called odd if there is an orientation of its edges and an automorphism that reverses the sense of an odd number of its edges, and even otherwise. Pontus von Br\"omssen (n\'e Andersson) showed that the existence of such an automorphism is i
Externí odkaz:
http://arxiv.org/abs/2204.01947