Banū Mūsā, the name applied to three brothers, Muḥammad, Aḥmad and al-Ḥasan, the sons of Mūsā b. Shākir al-Khurāsānī, sometimes also referred to as the Banū Shākir. They are important because of their foundational work in mathematical sciences, the role they played in the Graeco-Arabic translation movement, and, more generally, in the political, cultural and scientific life of …