Li Chunfeng

Si Li Chunfeng ( Chinese: ; Chinese: 立 ⁇ 風; pinyin: Lǐ Chúnfēng; : Li Ch'un-feng; 602-670) et sakey ya Intsik ya matematiko, astronomer, historian, tan politiko ya nambilay ed Baoji, Shaanxi, legan na saray dinastiya na Sui tan Tang. Sikatoy inmunan aturo ed Imperial Astronomy Bureau pian ontulong ed impangipaalagey na sakey a reformasyon ed kalendaryo. Sikatoy nagmaliw ya deputy na Imperial Astronomy Bureau tan dinesinyo toy kalendaryo ya Linde. Say ama to et educated state official tan Taoist met. Inatey si Li diad Chang'an nen 670.

Matematika
Inyarum nen Li iray panangipetek ed pigaran kimey ed matematika. Saray alimbawa ed saya et walad Nine Chapters on the Mathematical Art nen Liu Hui. Impatnag to a say sankamelagan a komon a karakel na saray bilang {2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12} et 27720 - say ebat et aliwan susto ed orihinal a teksto na siameran kapitulo. Sakey nin alimbawa na saya et diad kimey nen Zu Geng nipaakar ed lugar na sirkulo.Ho, Peng Yoke, LI, QI and SHU. Hong Kong University Press, 1985. University of Washington Press edition 1987. ISBN 0-295- 96362-X Inikdan nen Li so 22/7 (=3.142857 a paulit-ulit) imbes ya 3 bilang mas maong ya inkaparakel ed no anto so amta tayo natan bilang pi. Ginmapo so kada anotasyon to ed saray salita a "Say lingkor yo, si Chunfeng, tan saray katulongan to so marespeto a nankomento ed..." Nansulat si Li na pigaran matematikan kimey to, daiset so amta tayo nipaakar ed saratan. Maslak et ipapasen iratan ya andi-kaimportantian no ikompara ed arum nin agawaan to. Kaibay Liang Shu tan Wang Zhenru, insulat toy Shibu Suanjing (十部算经) nen 656. Sayan libro et samploran libro nipaakar ed matematika ya inyasain ed emperador.

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