Shiny Pebbles and other stuff

The reason why, we really should discuss. So, why is the result of multiplying two negatives numbers together a posit...

Schroedinger's cat is not alive, is not dead, and is not simultaneously alive and dead. It's more interesting tha...

At secondary school and then university, we meet a variety of definitions of the derivative, all motivated by the fundam...

Greatest Common Divisor The problem is simple: given two positive integers, \(a\) and \(b\), how do we find \(\gcd(a,b)\), the greatest ...

...\(i\) wants to be a quaternion. We can think of the complex numbers as two dimensional vectors, with a rule for multip...

Where did complex numbers come from? You might think that people invented \(i\) just so that they had a solution to the quadratic equat...