the National Natural Science Foundation of China (No. 10471093)
A code is said to be a w-identifiable parent property code (or w-IPP code for short) if whenever d is a descendant of w (or fewer) codewords, and one can always identify at least one of the parents of d. Let C be an (...
Project supported by the National Natural Science Foundation of China (No. 10471093).
The necessary and sufficient conditions for the existence of simple incomplete block design (v, ω; 4, 2)-IPBDs are determined. As a consequence, the necessary and sufficient conditions for the embeddings of simple ...
National Natural Science Foundation ofChina(No.10 4710 93)
This paper investigated the existence of splitting balanced incomplete block designs with blck size 2× k .The necessary conditions for such a design are λ(v-1) ≡0(mod k ),and λv(v- 1)≡0(mod 2 k 2).It will show th...