张苍(公元前256年——公元前152年),西汉丞相,封北平侯,阳武县(今河南省原阳县)富宁集乡张大夫寨村人。他生于战国末年(公元前256年),死于汉景帝五年(公元前152年)。张苍校正《九章算术》,制定历法,也是我国历史上主张废除肉刑的一为古代科学家。现有张苍墓,位于原阳县城关镇东北2公里谷堆村,属河南省重点文物保护单位。张苍墓东西长40米,南北款30米,高1至2米,墓周槐林茂密,郁郁葱葱。存有墓碑一通。圆首镌有云龙图案,中刻“汉丞相北平侯张公讳苍之墓”,为清康熙年间立。另有“张苍纪念堂”大殿和“西汉丞相张苍故里”大型石碑。
张苍战国末期曾在荀子的门下学习,与李斯、韩非等人是同门师兄弟。在秦朝时曾经当过御史。刘邦起义,他归顺了刘邦,西汉王朝建立之后,他先后担任过代相、赵相等官职。因为他帮助刘邦清除燕王臧荼叛乱有功,被汉高祖晋封为北平侯,以后又迁升为计相、主计。汉文帝时陈平去世后接任丞相一职,汉文帝后元元年因政见不同而自动引退。主要门生为是洛阳人贾谊。
张苍这个人非常博学,很有学问。他在历法、算学方面取得了很大的成就。
一、他提出和制订了一套比较完整的关于度、量、衡、方面的理论,他把算学研究成果直接用于国计民生。
二、在采用历法方面,张苍提倡采用《颛顼历》。
三、增订、删补《九章算术》。
《九章算术》总共收集246个数学问题。这些算法要比欧洲同类算法早1500多年,对世界数学发展产生过重要影响。
张苍是西汉时期河南阳武(今河南原阳县)人。精通天文历算,官至丞相,享年百余岁,是福寿两全的典型。张苍的人生经历,颇富有戏剧色彩。
据史书记载,张苍做过秦朝主管文书的御史。他为人很有正义感,对秦朝的残暴统治非常不满,经常发表一些抨击朝政的议论。秦王对张苍恨之入骨,准备指派公差逮捕他。有朋友向张苍通风报信,得知消息后,张苍立即逃回家乡阳武才躲过一劫。后来刘邦率领反秦起义军经过武阳时,张苍便乘势参加了起义军。
刘邦称汉王(前206),以张苍为常山守,随韩信攻赵。赵地平,汉王以苍为代相,后为赵相。高祖六年(公元前201),苍因平定臧荼有功,封为北平侯,食邑1200户。后迁为计相,专主计籍。又令其以列侯居相府,领主郡国上计者。黥布反叛,汉立皇子刘长为淮南王,任张苍为淮南相,凡14年,升御史大夫。孝文帝前元四年(公元前176)代灌婴为丞相,张苍任相15年,因所举中侯贪赃枉法,受到文帝责难,遂于后元二年(前162)称病免相。景帝五年(前152)卒,谥文侯。
张苍是西汉初年一位著名的历算家。张苍为计相时,编修律历,“以高祖十月始至霸上,故因秦时本十月为岁首”,不改秦制。吹奏音律,定法律条令,制定尺寸,斤两、斛斗、轻重之式,使天下有章可循。故汉家言律历者,以张苍为本。
历算学家张苍(公元前256年--前152年),西汉阳武(今河南原阳)人,是西汉初年历算学方面的突出代表,为我国自然科学的发展作出了杰出的贡献。
数学家张苍原阳张大夫寨人,生于周朝末年,秦时任检下御史,汉文帝时任丞相。他是西汉著名的政治家、律历家和数学家。为西汉王朝制定了立法与度量衡。他侧辅校正的《九章算术》是对我国及世界数学发展的重大贡献。现留有张苍墓一座,位于原阳县任谷堆村,墓前有清康熙年间立《汉北平侯张苍之墓》石刻。
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