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词汇 Catalan Numbers
分类 英语词汇 英语翻译词典
释义

Catalan Numbers

原声例句
凯莉日记 第1季

Especially the rows with the catalan numbers.

尤其喜欢加泰隆数那几行。

英语百科

Catalan number

The C5 = 42 noncrossing partitions of a 5-element set (below, the other 10 of the 52 partitions)
Lattice of the 14 Dyck words of length 8 - ( and ) interpreted as up and down
The associahedron of order 4 with the C4=14 full binary trees with 5 leaves

In combinatorial mathematics, the Catalan numbers form a sequence of natural numbers that occur in various counting problems, often involving recursively-defined objects. They are named after the Belgian mathematician Eugène Charles Catalan (1814–1894).

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