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Madhava of Sangamagrama (), was an Indian mathematician-astronomer from the town of Sangamagrama (believed to be present-day Irinjalakuda near Thrissur), Kerala, India. He is considered the founder of the Kerala school of astronomy and mathematics. He was the first to use infinite series approximations for a range of trigonometric functions, which has been called the "decisive step onward from the finite procedures of ancient mathematics to treat their limit-passage to infinity".〔 〕 One of the greatest mathematician-astronomers of the Middle Ages, Madhava made pioneering contributions to the study of infinite series, calculus, trigonometry, geometry, and algebra. Some scholars have also suggested that Madhava's work, through the writings of the Kerala school, may have been transmitted to Europe via Jesuit missionaries and traders who were active around the ancient port of Muziris at the time. As a result, it may have had an influence on later European developments in analysis and calculus. ==Name== Madhava was born as ''Irińńaŗappiļļy or Iriññinavaļļi Mādhava .'' He had written that his house name was related to the Vihar where a plant called "bakuļam" was planted. According to Achyuta Pisharati, (who wrote a commentary on Veṇvāroha written by Madhava) ''bakuļam'' was locally known as "iraňňi". Dr. K.V. Sarma, an authority on Madhava has the opinion that the house name is either Irińńāŗappiļļy or Iriññinavaļļy'. Irinjalakuda was once known as 'Irińńāţikuţal'. Sangamagrāmam (lit. ''sangamam'' = union, ''grāmam'' = village) is a rough translation to Sanskrit from Dravidian word 'Irińńāţikuţal', which means 'iru (two) ańńāţi (market) kǖţal (union)' or the union of two markets. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Madhava of Sangamagrama」の詳細全文を読む スポンサード リンク
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