sunflower
Sign in to saveAlso known as Δ-system
collection of sets in which every two sets have the same intersection
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integer
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parameterized complexity
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International Standard Book Number
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set theory
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set
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digital object identifier
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International Standard Serial Number
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combinatorics
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Paul Erdős
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empty set
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subset
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union
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Q118398
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Venn diagram
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intersection
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cardinality
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Terence Tao
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power set
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finite set
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pigeonhole principle
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