COMPLEXITY AND RANDOMNESS IN MATHEMATICS
“Pensar la complexitat” Symposium, Barcelona, 4 November 1991.
I have developed a mathematical theory of complexity, which I call “algorithmic information theory.” I have applied this theory to mathematics itself, and have shown that mathematics is not as simple as had been thought, and indeed that arithmetic contains infinite complexity and complete randomness. Here I shall give examples of my mathematical concept of complexity and how it is measured, outline its main properties, and discuss what it says about the limitations of mathematics.