Euclidean Geometry in Two Medieval Islamic Encyclopaedias

Two early encyclopaedic treatises, written in Arabic, include extensive discussion of geometry. Although both the Rasā'il Ikhwān al-Safā' and the Kitāb al-Shifā' fall within the Euclidean tradition, their style and content differ radically. The Neo-Pythagorean and Neo-Platonic Ikhwān al-Safā' place mathematics at the head of their encyclopaedia, but develop their discussion of geometry using a "sub-Euclidean" approach. Ibn Sīnā, whose orientation is broadly Aristotelian, includes an epitome of Euclid's Elements in its entirety, yet modifies the text at numerous points.     

Ways of Seeing: The First Medieval Islamic and Christian Depictions of Roderick,Last Visigothic King of Spain

In the early eighth-century palace of Qu.(s)ayr ‘Amra in Syria, an image survives of Roderick, last Visigothic king of Spain, whose passionate love affair with the beautiful La Cava precipitated the Muslim invasion of his country in 711. Startlingly, this Umayyad painting predates the earliest written historical source narrating the invasion, the Cronica mozarabe of 754, and of Hispanic origin, which recounts the barest details of the Muslim conquest. The written account was later developed by medieval Christian and Arabic historians who had opposing views of this momentous event, creating a legend of extraordinary power and longevity, which has evolved in many different artistic forms from the Middle Ages to the present day. This essay assesses current scholarly opinion regarding the interpretation of this Arabic visual image of the Visigothic king and considers its implications in relation to the development of the legend of Roderick and La Cava in written form during the medieval period.     

The Sword and the Sun: The Old World Drought Atlas as a Source for Medieval Mediterranean History

The release of the Old World Drought Atlas (OWDA) in November 2015 provides historians with an unprecedented glimpse into the climate of the medieval world. Through the careful examination of tree-ring data provided by the OWDA, historians can better gauge how the environment affected the course of medieval Mediterranean history, particularly in times and places where textual data is sparse, such as North Africa. The case studies of the Norman conquest of the coast of Ifrīqiyya in the 1140s and the invasion by the Banū Hilāl in the mid-eleventh century show the utility of the OWDA for gaining a better understanding the medieval Mediterranean. In particular, OWDA data shows that the arrival of the Banū Hilāl into Ifrīqiyya coincided with a period of extended drought that is not documented in the written sources and suggests that increased competition for scarce resources was instrumental to their entrance into the region.     

Prisons before Modernity: Incarceration in the Medieval Indo-Mediterranean

Over the course of the sixth/twelfth century, a new literary genre entered the Eastern Islamic world: the Persian prison poem (?absiyyāt). Far from being an isolated event, the prison poem was forged when punishment came to be reconfigured as incarceration. This development was reflected in literary texts extending across South Asia, Azerbaijan, and continental Europe. Locating the institution of the prison outside European modernity, this study traces the material grounds for this new literary form and situates this archive globally. Concomitantly with studying the medieval literature of incarceration, it evaluates the Indo-Mediterranean as a discursive rubric for the study of pre-modern literary cultures.