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math.CO2024
Switching methods of level 2 for the construction of cospectral graphs
Aida Abiad, Nils van de Berg, Robin Simoens
A switching method is a graph operation that results in cospectral graphs (graphs with the same spectrum). Work by Wang and Xu [Discrete Math. 310 (2010)] suggests that most cospec…
math.CO2024
The minimum weight of the code of intersecting lines in
Sam Adriaensen, Robin Simoens, Leo Storme
We characterise the minimum weight codewords of the -ary linear code of intersecting lines in , , , prime, . If is even, the mini…
math.CO2024
Stabiliser codes over fields of even order
Simeon Ball, Edgar Moreno, Robin Simoens
We prove that the natural isomorphism between GF(2^h) and GF(2)^h induces a bijection between stabiliser codes on n quqits with local dimension q=2^h and binary stabiliser codes on…