Gholamreza Dadkhah is Research Scholar (Islamic philosophy), University of Tehran. Among his publications are the edition of Shams al-Dīn Samarqandī's (d. 722/1322) Science of the Cosmos and the Soul (Mazda Publishers, 2014), and together with Asadollah Fallahi, Logic in Sixth/Twelfth Century Iran (The Iranian Institute of Philosophy, 2018).

Reza Pourjavady, Ph.D. (Freie Universität Berlin, 2008), is Visiting Professor of Islamic History and Culture at the Eberhard Karls University of Tübingen. His publications include Philosophy in Early Safavid Iran: Najm al-Dīn Maḥmūd al-Nayrīzī and His Writings (Brill, 2011), and coauthored with Sabine Schmidtke, A Jewish Philosopher of Baghdad: ʿIzz al-Dawla Ibn Kammūna (d. 683/1284) and His Writings (Brill, 2006).

Keys to the Sciences (Maqālid al-ʿulūm) contains the definitions of Arabic technical terms in twenty-one sciences. Written by an unknown author, the work was dedicated to Shāh Shujāʿ, who reigned Shiraz and its neighbouring region in the 8th/14th century.