About: Li Rui (mathematician)

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Li Rui (Chinese: 李锐; pinyin: Lǐ Ruì; 8 December 1768 in Suzhou – 30 June 1817 in Suzhou) was a Chinese mathematician. Li discovered independently an equivalent version of what is known today as Descartes' rule of signs.

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rdfs:label	لي روي (رياضياتي) (ar) Li Rui (ca) Li Rui (Mathematiker) (de) Li Rui (mathématicien) (fr) Li Rui (mathematician) (en) 李锐 (数学家) (zh)
rdfs:comment	Li Rui -李锐 en xinès, Lǐ Ruì en pinyin- (1768-1817) va ser un matemàtic xinès. Li Rui va descobrir independentment una versió equivalent del que avui coneixem com la regla dels signes de Descartes. (ca) لي روي (و. 1768 – 1817 م) هو رياضياتي من سلالة تشينغ الحاكمة، ولد في سوجو، توفي في سوجو، عن عمر يناهز 49 عاماً. (ar) Li Rui (Chinese: 李锐; pinyin: Lǐ Ruì; 8 December 1768 in Suzhou – 30 June 1817 in Suzhou) was a Chinese mathematician. Li discovered independently an equivalent version of what is known today as Descartes' rule of signs. (en) Li Rui (chinois : 李锐 ; pinyin : Lǐ Ruì; 8 décembre 1768 Suzhou – 30 juin 1817 Suzhou) est un mathématicien chinois. Li a découvert indépendamment une version équivalente de ce qui est connu aujourd'hui comme la règle de signes de Descartes. (fr) 李锐（1768年12月8日－1817年6月30日），字尚之，號四香，江苏苏州人，清朝数学家。他独立地发现了一种笛卡儿符号法则的等价形式。乾隆五十三年十二月初八日（1768年）生。乾隆五十三年（1788年），为县生员。乾隆五十六年（1791年）李锐到紫阳书院求学，跟随钱大昕学习三角、八线、小轮、椭圆诸法。钱大昕对李锐期望甚厚，尝语之曰：“凡为弟子者，不胜其师，不为贤弟子。吾友段若齊之于戴东原是矣。”阮元认为李锐“深于天文算术，江以南第一人也”。嘉庆元年，應阮元之請校证《測圓海鏡》，刊入《知不足斋丛书》。嘉慶二年（1797年），参与了阮元编撰的中国天文历算学家传记集《畴人传》的撰写校对过程。嘉庆五年，李锐經過焦循介紹，認識汪莱。嘉庆十年（1805年），李锐前往扬州，擔任太守张敦仁的幕宾。李锐、焦循和汪莱被稱為是“谈天三友”。嘉庆二十二年六月三十日（1817年8月12日），喀血而卒。所著《周易虞氏略例》及李氏《遺書十一種》皆收入《續修四庫全書》。北京圖書館藏有稿本李銳《觀妙居日記》。 (zh) Li Rui (* 8. Dezember 1768 in Yuanhe; † 30. Juni 1817 ebenda) war ein chinesischer Mathematiker. Als Jugendlicher lernte er Mathematik anhand des Lehrbuchs von Cheng Dawei (Suanfa tong zong, 1592). Nach dem Abschluss an der Provinzschule von Yuanhe 1788 studierte er an der Ziyang-Akademie in Yuanhe, an der der Direktor (1728–1804) sein Mathematiklehrer war. Seine erste Veröffentlichung war ein Anhang zu einem Kommentar seines Lehrers und 1797 veröffentlichte er einen Kommentar zu einem Werk von Li Zhi von 1248 über ein- und umgeschriebene Kreise, gefolgt von einem Kommentar über dessen Neue Stufen der Rechenkunst (Yi gu yan duan) von 1259. Nachdem der Erziehungsminister der Provinz Zhejiang Ruan Yuan in Hangzhou 1795 ein Programm zu Kommentaren der Werke älterer chinesischer Mathematiker (de)
foaf:name	Li Rui (en)
name	Li Rui (en)
birth place	China Suzhou
death place	China Suzhou
death place	China Suzhou
death date	1817-06-30 (xsd:date)
birth place	China Suzhou
birth date	1768-12-08 (xsd:date)
dcterms:subject	18th-century Chinese mathematicians Mathematicians from Jiangsu Scientists from Suzhou 19th-century Chinese mathematicians Qing dynasty people 1768 births 1817 deaths Historians of mathematics
Wikipage page ID	33987658 (xsd:integer)
Wikipage revision ID	1012500241 (xsd:integer)
Link from a Wikipage to another Wikipage	Descartes' rule of signs 18th-century Chinese mathematicians Mathematics Mathematicians from Jiangsu Scientists from Suzhou 19th-century Chinese mathematicians Qing dynasty people 1768 births 1817 deaths Historians of mathematics China Suzhou
sameAs	Li Rui (mathematician) Li Rui (mathematician) Li Rui (mathematician) Li Rui (mathematician) Li Rui (mathematician) Li Rui (mathematician) Li Rui (mathematician) Li Rui (mathematician) Li Rui (mathematician) Li Rui (mathematician) Li Rui (mathematician) Li Rui (mathematician)
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birth date	1768-12-08 (xsd:date)

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