EntityQ5606780· pop 9· linked from 15 articlesGregory's seriesSign in to savemathematical power series defining arctanConnectionsTaylor seriesEntityIsaac NewtonPersonGottfried Wilhelm LeibnizEntityLeonhard EulerEntityInternational Standard Book NumberEntitycomplex numberEntitydigital object identifierEntityQ118398Entityinverse trigonometric functionEntitycomplex planeEntityholomorphic functionEntityJames GregoryEntityrational functionEntitygeometric seriesEntityIndian mathematicsEntityconvergent seriesEntitypoleEntityMadhava of SangamagramaEntityNilakantha SomayajiEntityLeibniz formula for πEntityCategoriesSeries (mathematics)