Date: 11 September 1980 01:04-EDT From: Alan Bawden Subject: Re:"Assuming we are counting quarter-twists." To: Woods at PARC-MAXC cc: CUBE-HACKERS at MIT-MC I said: "Assuming we are counting quarter-twists." I realize that there are people out there who like to count half-twists as a single twist. I don't. I'm not trying to force my way of counting twists on anyone. I always try to be carefull to make this assumption explicit out of courtesy to those who might want to count otherwise. (Sort of like the Axiom of Choice.) In fact I DON'T know if that result is true if you count half-twists as well. I suspect it is, but I don't have a proof. You needn't jump up and down and point every time one of us quarter-twisters reveals himself. This one, at least, is well aware of his assumptions.