Analysis of information sources in references of the Wikipedia article "Omar Khayyam" in English language version.
Later, al-Karkhi (correct: al-Karaji), Ibn Tahir and the great Ibn al-Haytham in the tenth/eleventh century took it further by considering cubic and quartic equations, followed by the Persian mathematician and poet Omar Khayyam in the eleventh century.
This paper contains an extension by Mohsen Hashtroodi of Khayyam's method to degree four equations.
This paper contains an extension by Mohsen Hashtroodi of Khayyam's method to degree four equations.
