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| The spectrum of (gv, g, 3, λ)-DF in Z_(gv) | |
| 基金项目： | supported by National Natural Science Foundation of China (Grants Nos. 10771013, 10831002) |
| 摘 要： | In this paper, the necessary and sufficient conditions for the existence of a (gv, g, 3, λ)- difference family in Zgv are established. As a consequence, the existence spectrum of a cyclic (3, λ)-GDD of type gv without short orbits is determined. |
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