Presents an account of the leadership in the Jewish community of Fustat, the largest of the Jewish communities in 11th-century Egypt. The author follows the activities of the leaders and analyzes their motives in the light of the complex relationships developing in the community between the different ethnic groups, while in the background the traditional centres of Jewish authority in Palestine and Babylon battled each other for control of the Jewish people. The survey of these events was made by the author's analysis of documents and letters from the Geniza in Cairo.
