In the 9 tex2html_wrap_inline195 century Al-Ma'mum established Baghdad as the new center of wisdom and learning. He establihed a research institute, the Bayt al-Hikma (House of Wisdom), which would last more than 200 years. tex2html_wrap_inline191 Al-Ma'mum was responsible for a large scale translation project of as many ancient works as could be found. Greek manuscripts were obtained through treaties. By the end of the tex2html_wrap_inline199 century, the major works of the Greeks had been translated. In addition, they learned the mathematics of the Babylonnians and the Hindus.