In the 14th century, Madhava of Sangamagrama, the founder of the so-called Kerala School of Mathematics, found the Madhava–Leibniz series, and, using 21 terms, computed the value of π as 3.14159265359.
在14世纪，Madhava of Sangamagrama， Kerala数学学院的创立者，发现了π的莱布尼茨序列，并用该公式的21项计算出圆周率为3.14159265259。