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A8

as forever asserting that.

A cut is a self-returning line which I draw
on the board with green chalk, but on paper
merely as a fine line. A cut is not a graph-replica: It
does not itself assert anything. But the cut
together with all that is within it is called an
enclosure; and an enclosure is a graph.
The surface outside the cut is called its place.
The surface inside the cut is called its area.

I gave you 7 Permissions; but I can
state these more neatly as follows:

Go to p 18 of Vol I
and then to p 26 of Lecture III Vol I.

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