Sunflower (mathematics)

A mathematical sunflower can be pictured as a flower. The kernel of the sunflower is the brown part in the middle, and each set of the sunflower is the union of a petal and the kernel.

In mathematics, a sunflower or $\Delta$ -system is a collection of sets whose pairwise intersection is constant, and called the kernel.

The $\Delta$ -lemma, sunflower lemma, and sunflower conjecture give various conditions that imply the existence of a large sunflower in a given collection of sets.

单词	Delta system
释义	Delta system 英语例句库 Eustatic lake level and source change had resulted in intercalation development in braided delta system. 湖面的升降和物源的摆动使辫状三角洲沉积体系中发育夹层。英语百科 Sunflower (mathematics) In mathematics, a sunflower or $\Delta$ -system is a collection of sets whose pairwise intersection is constant, and called the kernel. The $\Delta$ -lemma, sunflower lemma, and sunflower conjecture give various conditions that imply the existence of a large sunflower in a given collection of sets.
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Delta system

Sunflower (mathematics)