120

24

man, we can write

(Washington was a commonplace man)
XXXXX

or since the size of a sep is not a significant feature
(Washington was a commonplace man)
X

Or making the loop infintesimal we shall understand a sep as denying what id written in its close.

There are a number of important corollaries from this convention which I have not time to point out.
You will easily make them out for yourselves.

It sometimes happens that lines of identity have to cross one another and produce confusion.
Conventions 11 and 12 provide