Rose (topology)

（重定向自Bouquet of circles）

The universal cover of the figure eight can be visualized by the Cayley graph of the free group on two generators a and b

In mathematics, a rose (also known as a bouquet of n circles) is a topological space obtained by gluing together a collection of circles along a single point. The circles of the rose are called petals. Roses are important in algebraic topology, where they are closely related to free groups.

单词	Bouquet of circles
释义	Bouquet of circles 英语百科 Rose (topology) （重定向自Bouquet of circles） In mathematics, a rose (also known as a bouquet of n circles) is a topological space obtained by gluing together a collection of circles along a single point. The circles of the rose are called petals. Roses are important in algebraic topology, where they are closely related to free groups.
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