Explanation of Set [Set] Detailed explanation of a set of rational numbers of a set of mathematical elements with certain * * * properties (1). Scattered people or things gather together; Get together. "History of Han Xiongnu Biography": "300,000 people, 300 rations ... With its way, it was not assembled for one year, and the soldiers who came first were exposed." For example, Zhang Wen said, "If" Interpretation of the Text "is really the special name of the Eight Dynasties, countries are different and cannot get together." Wei Wei's Oriental, Chapter 18, Part IV: "* When I went to Jinggangshan, there were very few people at first, so I whistled and got together." Form a team (2). Collective, group. Lu Xun's Collection of Letters to Xu Shoushang: "Recently, a magazine called Trendy was published, which is quite satisfactory. It's only written in a small collection of about 20 people, with occasional works by teachers. "(3). Mathematical terminology. Refers to the sum of several things with the same property. If all natural numbers become a set of natural numbers, then all personnel of a unit become a set of all personnel of the unit. Short for "set". The explanation set of the word decomposition set is that the bird stops in the tree: "Yellow birds come and gather in the bushes". Collect: collect. Assemble. A rally. Collectively. Group. Training. Distribution. Raise funds. Focus. Get together. Every little makes a mickle. A book composed of many works: a collection. Selected works. Poetry collection. Selected works. Complete works. The explanation of closing in the big book is to close your eyes. Hug. A perfect match. Appearance is close to spirit. Gathering: resultant force. Co-organized. Joint venture. Not violating, one thing corresponds to or conforms to another: qualified. Legal. Love each other. It should be: it should be. Together. "Article combined with the times, poetry combined with the times. "