F|R:
What is the mathematical function from which Y Combinator takes its name, and why did you choose this?
Graham:
It's a function that builds recursive functions without them needing to have names. The Y Combinator is one of those things that seems miraculous when you first encounter it. You wouldn't necessarily have expected such a thing to be possible. We named the company after it partly because we thought it was such a cool concept, and partly as a secret signal to the kind of people we hoped would apply.