Cube root this required the construction, now known to be impossible, of the length . A method for extracting cube roots appears in "The Nine Chapters on the Mathematical Art", a Chinese mathematical text compiled around the 2nd century BCE and commented on by Liu Hui in the 3rd century CE. The Greek mathematician Hero of Alexandria devised a method for calculating cube roots in the 1st century CE. His formula is again mentioned by Eutokios in a commentary on Archimedes. In 499 CE Aryabhata, a mathematician-astronomer from the classical age of Indian mathematics and Indian astronomy, gave a method for finding
Minuscule 729 (Gregory-Aland) Minuscule 729 (Gregory-Aland) Minuscule 729 (in the Gregory-Aland numbering), Θ (von Soden), is a Greek minuscule manuscript of the New Testament written on parchment. Palaeographically it has been assigned to the 13th century. The manuscript has complex contents. Scrivener labelled it as 747. The codex contains a complete text of the four Gospels on 341 parchment leaves (size ). The text is written in two columns per page, 37-47 lines per page. The text is divided according to the ("chapters"), with their ("titles of chapters") at the top of the pages. There is no another division according to the smaller