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：2025/12/04
difference set
（ plural ）
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(combinatorics) A subset of a group such that any element of the group can be expressed as the difference (or the quotient) of two elements in such subset.
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difference set
A difference set in a finite abelian group can be used to construct a balanced incomplete block design with remarkable combinatorial properties.
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A difference set in a finite abelian group can be used to construct a balanced incomplete block design with remarkable combinatorial properties.
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