A mathematical term that refers to making mathematical formulas in a poem format that is easy to remember in Dongyang Industry and Academy. Guilt.

In traditional industrial schools, it was more important to memorize the scriptures written in the scriptures than creative efforts, so the form of approval was considered important.It is very noteworthy that the most popular period for voting was during the Ming Dynasty, when mathematics was most stagnant in China. 『Gujangsanbeopbiryudaejeon(九章算法比類大全)』 by Ohgyeong(吳敬), published in 1450, contains 「Nangbeopga(難法歌)」, which includes the following.… 白米三石五斗; Samseok, Jimaoduohseung, Jipalduwheat, Hwanggigakyuwomaekhwanmi, Gokyudumuyi, Jigongneungsandan Danjeok Unhapin Soi). … … (Right West River Moon)It means that white rice, seokseom, dot mal is seokseom, and it can be converted into 8 maek (wheat) mal, which is jima dot and maekseom. The question is, how much would it cost if nine islands of wheat and six mals were exchanged for white rice?

What is noteworthy here is the melody of Sogangwol. In other words, it can be seen that the math problem was sung like a song. 『Gujangsanbeop Biryudaejeon』 was the first to deal with mathematics with songs.『Sanbeop Tongjong(算法統宗)』 was greatly influenced by this book and adopted Gugyeol and Gagyeol extensively. In particular, the learning tips and points to be noted in mathematics are described in the form of Chinese poetry, and the calculation method of the abacus is called Gugwiga (九歸歌), and all the contents are in the form of poetry. It was widely distributed with publication in China and Japan. In Korea, numerous sanseos, including 『Gusuryeok(九數略)』 of the Joseon Dynasty, took the form of approval.

references

Arithmetic TongjongNine Numbers (Nine Numbers)『Korean Mathematics History』 (Kim Yong-un and Kim Yong-guk, Yeolhwadang, 1982)『China Mathematics History』