The most usual method is ECO methodology which gives the bijection by showing that they have the same generating trees. While we prefer some more intuitive and directed bijections.
有很多人在这个方面做了一些研究,最常见的方法是ECO方法,即通过证明它们都满足同样的生成树来说明他们之间存在双射。
参考来源 - 格路与有禁排列·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
N a mathematical function or mapping that is both an injection and a surjection and therefore has an inverse 双向单射 → see also injection, surjection
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