On the (much too early) bus to work this morning, I was reading my Twitter feed and saw an interesting question from Rob Hawkes:

How do you handle config files in your apps when you use Git? I keep accidentally adding config files with sensitive data to Git. :(

— Robin Hawkes …

This is the mostly code second half of a two part post that delivers on a promise of meaningful uses of some theory I overviewed in my last set of posts.If you see words like topograph, river, and base and you aren't sure what I mean, you may want …

As I mentioned in my last set ofposts, the content would go somewhere and this post will be the first to deliver on that. In fact this is the all math, no code first half of a two part post that will deliver. If you see words like topograph, river …

This is the second (continued from Part 2) in a series of three blog posts. In the following we'll investigate a few properties of an object called Conway's topograph. John Conway conjured up a way to understand a binary quadratic form – a very important algebraic object – in a geometric context …

This is the second (continued from Part 1) in a series of three blog posts. In the following we'll investigate a few properties of an object called Conway's topograph. John Conway conjured up a way to understand a binary quadratic form – a very important algebraic object – in a geometric context …