As a teenager, Greg created independently of Kolmogorov and Solomonoff, what we call today algorithmic information theory, a sub ject of which he is the main architect.
My favorite portrait of Greg can be found in John Horgan's-a writer for Scientific American-1996 book The End 01 Science.
Ladies and Gentlemen, Greg Chaitin!.
Springer London Ltd Limits of mathematics. a course on information theory and the limits of formal reasoning, paperback/gregory j. chaitin
