- Lambda Calculus - Reflective and Meta-programming - Meta-object Protocol - Closures - Continuations - Monads - Arrows - First-class Everything - Stack and Register-based Programming - XML - Linear Algebra - Fractal and Wavelet Image Compression - Regular Expressions - Clojure - LaTeX
NB. The concepts to which the above keywords refer, may or may not have been covered by the article. The keywords themselves are however absent.
Additional reading suggestions:
- Jon Bentley's Programming Pearls - Tom Mitchell's Machine Learning - Douglas Hofstadter's Gödel, Escher, Bach - Brian Kernighan and Rob Pike's Unix Programming Environment