While at MIT, McCarthy developed LISP, which became the standard programming language of the artificial intelligence community, but would also permeate the computing world at large.

For me, I've noticed that a few domains I've always been interested in (including artificial intelligence, machine learning, natural language processing, and pattern recognition) use a lot of math.

The third part shows some practical examples of LISP language in processing of symbols, artificial intelligence and data base systems design.