As I have said repeatedly, we're talking 20+ years ago over in Amsterdam and Helsinki. We'll probably never know for sure if he ever used any Unix or Minix code at all, but either way Linux is hardly an independent piece of work, Torvalds will be the first to tell you this. To deny it is to deny the real American ingenuity that was used to develop Unix in the first place.
Not good enough. I just gave you links to the code.
Show me the code, little man!
You might try reading some interviews or, forbid, watch the movie "Revolution OS". Many interviews with Torvalds, Stallman, etc. Gets into linux and GNU developed. And Linus addresses how the code came about on the record. I'm sure you'll be surprised - even shocked and pasty white when you learn that Linus did in fact develope the OS on his own. You guys are begging for a fallback position now that allows you to try to diminish Linus but that doesn't make you look quite as bad. Hint - damage is done. Learn, correct your mistakes and get some respect. No harm no foul.