Reply To: Turnstile in Logic Home › Forums › Nemeth Code for Math and Science › Turnstile in Logic › Reply To: Turnstile in Logic August 31, 2009 at 4:12 pm #20015 Chris ClemensKeymaster I'm sorry to admit that I don't know anything about Logic. It's been a long time since my college days. I can quiz other math transcribers about it and find out if anyone knows what a Turnstile math symbol is.