摘要
The concept of relative t-designs for Q-polynomial association schemes is due to Delsarte(Philips Res Rep 32: 373C411, 1997). In this paper, we discuss the Fisher type lower bounds of tight relative 6-designs very explicitly for binary Hamming association schemes H(n, 2).
The concept of relative t-designs for Q-polynomial association schemes is due to Delsarte（Philips Res Rep 32： 373C411, 1997）. In this paper, we discuss the Fisher type lower bounds of tight relative 6-designs very explicitly for binary Hamming association schemes H（n, 2）.
基金
Supported by the Natural Science Foundation of Hebei Province（A2013408009）
Sup- ported by the Specialized Research Fund for the Doctoral Program of Higher Education（20121303110005）
Supported by the Natural Science Foundation of Hebei Education Department（ZH2012082）
Supported by the Foundation of Langfang Teachers University（LSBS201205）
