Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tilted Sperner Families   Let \cal A be a family of subsets of an n-set such that \cal A does not
contain distinct sets A and B with |A\B| = 2|B\A|. How large can \cal A be? Our
aim in this note is to determine the maximum size of such an \cal A. This
answers a question of Kalai. We also give some related results and conjectures.

18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: eess
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
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The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: funct-an
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
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The categories of this paper are: stat
33
The categories of this paper are: plasm-ph