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(p2,2l)-symmetry three-dimensional space groups G3l,p2

✍ Scribed by Jablan, S. V.


Book ID
114513562
Publisher
International Union of Crystallography
Year
1992
Tongue
English
Weight
648 KB
Volume
48
Category
Article
ISSN
0108-7673

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## Abstract An (__n,k,p,t__)‐lotto design is an __n__‐set __N__ and a set ${\cal B}$ of __k__‐subsets of __N__ (called blocks) such that for each __p__‐subset __P__ of __N__, there is a block $B \in {\cal B}$ for which $\left | P \cap B \right | \geq t$. The lotto number __L(n,k,p,t)__ is the small