It is well-known that Pythagoras’ ancient Greek equation for right triangles: a2+ b2= c2 , is older than ancient Greece. We also know that in Khufu’s pyramid the height equals the radius of a circle ...

Medina al-Zahira is tied to one of the most powerful and controversial figures of late Umayyad al-Andalus: Almanzor (al-Manṣūr). While the caliphs reigned, Almanzor is remembered as the de facto ...