Nam Byeong-gil (, 1820–1869), also known as Nam Sang-gil (南相吉, 남상길),

courtesy name A courtesy name (), also known as a style name, is a name bestowed upon one at adulthood in addition to one's given name. This practice is a tradition in the East Asian cultural sphere, including China, Japan, Korea, and Vietnam.Ulrich Theobald ...

Jasang (),

art name An art name (pseudonym or pen name), also known by its native names ''hào'' (in Mandarin), ''gō'' (in Japanese), ''ho'' (in Korean), and ''tên hiệu'' (in Vietnamese), is a professional name used by East Asian artists, poets and writers. The ...

Yugiljae () or Hyecheon (), was a Korean mathematician and astronomer of the

Joseon Joseon (; ; Middle Korean: 됴ᇢ〯션〮 Dyǒw syéon or 됴ᇢ〯션〯 Dyǒw syěon), officially the Great Joseon (; ), was the last dynastic kingdom of Korea, lasting just over 500 years. It was founded by Yi Seong-gye in July 1392 and re ...

period. He was a member of the

Uiryeong Nam clan Uiryeong Nam clan () is a Korean clan. Their Bon-gwan is in Uiryeong County, South Gyeongsang Province. According to research from 2015, the number of people in Uiryeong Nam clan was 162729. Their founder was . Before he became naturalized, he wa ...

. His brother Nam Byeong-cheol (南秉哲) was also a noted astronomer. His works included: *Siheon giyo () *Seonggyeong () *Yangdo uidoseol () *Chubo cheoprye () *Chiljeong bobeop () *Taeyang chulippyo () *Seonhak jeongui () *Seontaek giyo () *Jungseong sinpyo () *Chunchu ilsiggo ()

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