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math.CO2026
On the dimension of the space generated by characteristic vectors of -Steiner systems
Qilong Li, Charlene WeiÃ, Yue Zhou
Fix a prime power and parameters , the corresponding Steiner system in the Grassmann scheme, or the -Steiner system, is a collection of $…
math.CO2026
The linear programming optimum for packings in classical association schemes
Kai-Uwe Schmidt, Charlene WeiÃ
Association schemes are central objects in algebraic combinatorics, with the classical schemes lying at their core. These classical association schemes essentially consist of the H…
math.CO2024
Nontrivial -designs in polar spaces exist for all
Charlene WeiÃ
A finite classical polar space of rank consists of the totally isotropic subspaces of a finite vector space over equipped with a nondegenerate form such that …