Let Cdenote the set of all k-subests of an n-set.Assume Alohtain in Ca,and A lohtain in (A,B) is called a cross-2-intersecting family if |A B≥2 for and A∈A,B∈B.In this paper,the best upper bounds of the cardinalities for non-empty cross-2-intersecting familles of a-and b-subsets are obtained for some a and b,A new proof for a Frankl-Tokushige theorem[6] is also given.
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机译:Spatial Joinery: Building Relationships through Space. A Shared Cohabitation Spacethat Re-imagines the Lifestyle of Single-Parent Families =榫卯空间: 通过空间建立关系。一个共享的同居空间,重新想象单亲家庭的生活方式。