Another post for the Poincaré Project. We've already seen that a one-form is a linear function from a vector to a (for our purposes) real number. On a manifold, one-forms correspond to stack-type vectors being applied to arrow-type vectors by counting ho...

In the post Reusable Django Apps and Introducing Tabula Rasa I mentioned my project to create an out-of-the-box Django-based website with everything but the domain-specific functionality. At the time I was calling it Tabula Rasa but now I've settled on th...

When I lived in Brunei in the mid-80s, a neighbour had a BBC Micro and I would go over there to play the space trading game Elite. The hidden-line wireframe graphics and massive procedurally-generated universe seemed amazing to me at the time and it was d...