Dubai Week three of my Arabic adventure starts with a maths lesson. At least, that’s how it looks when the tutor writes on the white board 25÷4=5. But no such luck - I was always pretty good at maths ...

This is a preview. Log in through your library . Abstract It is shown in this article that the two sides of an equation in the medieval Arabic algebra are aggregations of the algebraic "numbers" ...

A decorated professor of economics at the University of Pennsylvania was surprised when American Airlines pilots whisked him off of the delayed flight he had been ...