[next] [prev] [up] Date: Thu, 11 Sep 80 01:04:00 -0400 (EDT)
[next] [prev] [up] From: Alan Bawden <ALAN@MIT-MC >
[next] ~~~ [up] Subject: Re:"Assuming we are counting quarter-twists."

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.

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