This blog has a really interesting assortment of articles on mathematics and programming. You can use the tags to your right to find topics that interest you, or you may want to have a look at

- the problems I wrote to get your brain working;
- some twitter proofs of mathematical facts.

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The 2020 APL programming competition was tough! In this post I share a couple of thoughts and my solutions.

Let's prove that, if a set has size \(n\), then that same set has exactly \(2^n\) subsets.