A forgotten number system invented in the 19th century may provide the simplest explanation for why our universe could have 10 dimensions As children, we all learn about numbers. We start with ...

The study of string constraints and symbolic computation encompasses the development of methods and algorithms for analysing and solving problems where variables represent sequences of characters.

Scientists have picked apart some 500-year-old calculations from the Inca empire. The team deciphered the maths from a series of 'khipus': elaborate structures of coloured, knotted strings.