86

92

[diagram] mean that U is a graph precisely expressing
V. It is necessary to place V in the saw-rim
as I call the line about it, because in thus
speaking of a sign materialiter, as they said
in the middle ages, we require that it should
have a hook that it has not got. For example,
[diagram] asserts, of course, that if
it hails, it is cold de inesse.
Now a graph asserting that this graph is
scribed on the sheet of assertion, will be
[diagram]
This graph only asserts what the other does assert.
It does not say what the other does not assert.
But there would be no difficulty in expressing that